探讨新疆“塔克拉玛干沙漠人”高血压流行病因素的研究
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摘要
目的:探讨新疆塔克拉玛干沙漠人高血压病传统危险因素及其高血压与膳食、水质相关因素分析。方法:于2005年9月及2008年10月,在新疆“塔克拉玛干沙漠人”居住地(新疆和田地区于田县达里雅布依乡),以统计2008年达里雅布依乡户籍本为标准,总计“沙漠人”总人口数为1171人,应用WHO MONICA方案,采取随机抽样的方法,对508名≥16岁塔克拉玛干“沙漠人”进行高血压流行病学调查,膳食调查,血液生化检测,及进行当地水质检测。将≥30岁282名“沙漠人”与随机抽取新疆和田于田县≥30岁成年人151名进行对照分析。结果:≥30岁沙漠组高血压检出率为14.55%,≥30岁于田组高血压检出率为42.95%,经2×2列联表χ2检验,两组检出率有显著差异(P<0.001)。BMI、HDL-C两组比较有差异(P<0.05),TG、TC、LDL-C、空腹血糖、摄入脂肪量、摄盐量两组比较有显著差异(P<0.001)。而腰围两组比较无统计学意义。多因素logistic回归分析显示,性别、年龄、高血糖、摄盐量与高血压的传统危险因素相关;膳食营养素中主要以摄盐量、钠与高血压危险因素相关。水质与高血压检出率进行相关分析显示,水质中钙与高血压检出率成正相关,溶解性总固体、硫酸盐、氯化物、氟化物、钾、钠、镁均与高血压检出率成负相关。结论:性别、年龄、高血糖、摄盐量及膳食中摄盐量、钠摄入与沙漠人高血压的危险因素相关。“沙漠人”高血压检出率低(10.89%),该干旱地区生活饮用水水质特点以低钙高镁为主,与减少高血压的发生可能相关。
Objective: Our study aimed at exploring the traditional risk factors of hypertension in the Taklimakan desert as well as its association with diet and water quality. Methods: We performed an epidemiological survey focusing on diet, water quality and plasma biochemical assays in a randomly selected natural population including 508 individuals aged 16 or more known as“desert men”, who are currently residing in the Taklimakan desert using the WHO MONICA scheme. In addition, we compared these profiles among adults 30 years of age and older between 282“desert men”and 151 randomly selected controls in Yutian country of Hetian city. Results: Multivariate logistic regression analysis indicated that age, sex, hyperglycemia and salt consumption as well as and sodium intake in diet were associated with traditional hypertension risk factors. Correlation between water quality and hypertension showed that calcium was positively associated with the detection rate of hypertension, while total dissolved solids, sulfate, chloride, fluoride, potassium, sodium and magnesium conferred negative associations. Conclusions: Age, Sex, hyperglycemia and salt consumption as well as sodium intake in diet were correlated with hypertension risk factors, which leads to the speculation that the water of the desert draught area characterized by high calcium and low magnesium might account for the low incidence of hypertension in the“desert men”(10.89%)
引文
[1] Kirkutis A,Norkiene S,Griciene P,et a1.Prevalence of hypertension in Lithua -nian mariners[J].Proc West Pharmacol Soc,2004,47:71-75.
    [2] Kearney PM,Whelton M,Reynolds K,et a1.Global burden of hyper tension: analysis of worldwide data[J].Lancet,2005,365:217-223.
    [3] Horan MJ,Lenfant C.Epidemiology of blood pressure and predictors of hypertension[J]. Hypertension.1990,15(2 suppl):120-124.
    [4] Kearney PM, Whelton M, Reynolds K, Whelton PK, He J. Worldwide p revalence of hypertension: a systematic review. J Hypertens. 2004 Jan; 22 (1): 11-9.
    [5]全国血压抽样调查协作组.中国高血压的患病率、知晓率及治疗和控制状况:1991年抽样调查结果[J].高血压杂志,1995,10:26-30.
    [6]《中国居民营养与健康现状》在京公布-网务院新闻办公室新闻发布会材料[J].营养学报,2004,26(6):4l7-420.
    [7]中国高血压防治指南修订委员会.中国高血压防治指南[M].北京:人民卫生出版社, 2005:3-19.
    [8]中国高血压防治小组.《中国高血压防治指南》.高血压杂志,2000,8:94-112.
    [9] Burt VL,Whelton P,Roccella EJ,et al.Prevalence of hypertension in the US adult population.Results from the Third National Heath and Nutrition Examination Survey, 1988-1991[J].Hypertension,1995,25:305-313.
    [10] Ward RH.Familial aggregation and genetic epidemiology of blood pressure hypertension:Pathophysiology,Diagnosis and Management[J].New York, NY: Raven Press.1990:81-100.
    [11] Willams RR.Are there interaction and relations between genetic and environmental factors predisposing to a high blood pressure?[J].J Hyper -tens,1991 18(suppll):1-29.
    [12] Hamet P,Pauova Z,Adarichev V,et al.Genes and environment [J]. Hypertens, 1998, 16:397-418.
    [13] Schroeder H. A., Relation Between Mortality from Cardiovascular Disease and Treated Water Supplies. JAMA.,1960,172:1902-1908. Christina Nerbrand et al.
    [14] Neri.Cardiovascular disease and the mineral content of drinking water. [J ] . Br Med Bull1971,27: 21.
    [15] Christina Nerbrand, Lars Agréus, et al.The influence of calcium and agnesium in drinking water and diet on cardiovascular risk factors in individuals living in hard andsoft water areas with differences in cardiovascular mortality [J ]. BMC Public Health 2003, 3:21~30.
    [16]苗俊东,瓦哈甫·马木提,刘建敏,等.喀什地区维吾尔族成年人高血压的患病率与水质等因素的关系.中国心血管病研究杂志2006,4(9): 668-670.
    [17]王增武,武阳丰,赵连成,等.中国中年人群高血压患病率及知晓率、治疗率、控制率的演变趋势[ J ].中华流行病学杂志. 2004, 25 (5) : 407 - 411.
    [18]刘力生,陈孟勤,曾贵云,等.高血压研究四十年.中国科学医学院学报, 2002, 24 (4) : 401 - 408.
    [19] Wu X, Duan X, Gu D, Hao J , Tao S, Fan D. Prevalence of hypertension and its trends in Chinese populations. Int J Cardiol. 1995; 52: 39-44.
    [20] Gu D, Reynolds K, Wu X, Chen J , Duan X, Muntner P, et al. Prevalence, awareness, treatment, and control of hypertension in china. Hypertension. 2002; 40:920-927.
    [21] Kaya D, Cevrioglu S, Onrat E. Single dose nasal 17beta-estradiol administration reduces sympathovagal balance to the heart in postmenopausal women[J].J Obst Gynaecol Res,2003,29 (6):406-411.
    [22]中国高血压防治指南修订委员会.中国高血压防治指南[M ].北京:人民卫生出版社, 2005: 3 - 19.
    [23] Oparil S , Miller AP. Gender and blood pressure gulation[J].Hypertens ,2003 ,21 (8):1447—1448.
    [24]王志军,王朝阳.原发性高血压危险因素研究[J],中华心血管病杂志,2003,19(8):494-496.
    [25]广东省糖尿病流行病学调查协作组.广东省高血压流行病学特征和危险因素分析[J].广东医学,2002,23(4):417-419.
    [26]王增武,武阳丰,赵连成,等.中国中年人群高血压患病率、知晓率、治疗率、控制率的演变趋势[J ].中华流行病学杂志,2004,25 (5) :407.
    [27] Singh RB, Suh IL, Singh VP, Chaithiraphan S,Laothavorn P, Sy RG, et al. p revalence, control and strategies in develop ing countries for p revention. J Hum Hypertens. 2000 Oct - Nov; 14 ( 10 - 11) : 749- 63.
    [28] Whelton PK, He J , Appel LJ, Cutler JA, Havas S,Kotchen TA, et al. Primary p revention of hypertension: Clinical and public health advisory from The National High Blood Pressure Education Program. JAMA.2002; 288: 1882 1888.
    [29]李家付.慢性酒精中毒147例的临床分析[J].中国神经精神疾病杂志,1999,25(2):118.
    [30]李秀文,员伟强.青年卒中的危险因素[ J ].中国误诊学杂志,2005,5:1819-1921.
    [31]杨军,张红叶,赵连成,等.蛋白质、盐和脑卒中死亡率关系的研究.中国慢性病预防与控制,1999 ;7(3) :112.
    [32]李亚英.高血压病家族遗传因素与易患危险因素聚集性的关联[J].铁道医学,1998,26(4):233-235.
    [33] Reaven GM.Role of insulin resistance in human disease[J]. Diabetes, 1988, 37:595-607.
    [34] Kaplan NM.The deadly quartet,upper-body,glucose intolerance,hypertrigly -ceridemia, and hypertension.Arch Intern Med,1989,149:1514-1520.
    [35] Segura J , Ruibpe LM. Antihypertensive therapy in patients with metabolic syndrome [J ]. Curr Op in Nephrol Hypertens ,2006,15 (5) :493 2497.
    [36]王景福、张新梅.1080例高血压与超重、血脂异常、糖耐量降低及糖尿病关系分析[J].心血管康复医学杂志,2000,9(4):23.
    [37]汪凤兰、王秋芳、王宝霞.血脂异常与超重、高血压病、冠心病、糖耐量低下及糖尿病关系分析[J].心血管康复医学杂志,1999,8(2):63.
    [38] Bonna KH,Thelles DS.Association between blood pressure and serum lipids in a population of Tromso study[J].Circulation,1991,83:1305-1314.
    [39]唐晓峰,李华,王继光,等.1193例住院高血压病患者胰岛素分泌和敏感性情况[J ].中华内科杂志, 2004, 43(10): 735-739
    [40]卫苓,王新新.老年高血压病患者糖代谢的临床观察[J ].中国综合临床, 2004, 20(2): 113-114.
    [41]李光伟,潘孝仁,LilliojaS,等.检测人群胰岛素敏感性的一项新指数[J].中华内科杂志,1993,32:656-657.
    [42] Mancia G. The as sociation of hypertens ion and diabetes : prevalence, cardiovas cular risk and protection by blood pres sure reduction. Acta Diabetol 2005; 42 Suppl 1: S17-S25
    [43] Janghorbani M, Amini M. Hypertension in type 2 diabetes mellitus in Isfahan, Iran: incidence and risk factors. Diabetes Res Clin Pract 2005; 70:71?80.
    [44] McLaughlin T, Reaven G. Insulin res is tance and hypertens ion. Patients in double jeopardy for cardiovas cular dis eas e. Geriatrics 2000; 55 (6):28-32, 35
    [45] Haffner SM. Metabolic predictors of hypertension. [J] Hypertens (Suppl) 1999;17: S23?S28.
    [46] Intersalt Cooperative Research Group. Intersalt: an international study of electrolyte excretion and blood pressure: results for 24-hour urinary sodium and potassium excretion [J]. BMJ 1988; 297:319?328.
    [47]蒋豫园.高血压流行病学[J].中华流行病学杂志,1991,12(3):166-176.
    [48] 1991年抽样调查结果[J].高血压杂志,1995,10:26-30.
    [49]耿贯一主编.流行病学(第三卷)第二版.人民卫生出版社,1996,15-23.
    [50]傅世英,曹雅珉,李耀平.黑龙江省高血压病流行病学的研究.中华内科杂志,2002;41:114.
    [51] Muntzel M,Drueke T.A comprehensive riview of the salt and blood pressure relationship.Am J Hypertens,1992,5:15.
    [52] Kaplan N M. Primary hypertension: pathogenesis. In: Kaplan NM, ed. Kaplan & clinical hypertension[M]. The 9th ed. Philadelphia: Lippincott Williams & Wilkins, 2006:50?121.
    [53] Sacks FM, Svetkey LP, VollmerWM, et al. Effects on blood p ressure of reduced dietary sodium and the Dietary App roaches to Stop Hypertension (DASH) diet. N Engl J Med, 2001, 344: 3 - 10.
    [54] Denton D, Weisinger R, Mundy NI, et al. The effect of increased salt intake on blood pressure in himpanzees[J]. Nat Med 1995; 1:1009?1016.
    [55] KorhonenMH, LitmanenH, RauramaaR, et al. Adherence to the salt restriction diet among people with mildly elevated blood pressure [J]. Clin Nutr 1999; 53:880?885.
    [56] De Wardener HE, MacGregor GA. Sodium and blood pressure.Current Opinion in Cardiology, 2002, 17: 360- 367.
    [57] Morris R C Jr, Sebastian A, Forman A, et al. Normotensive salt sensitivity: effects of race and dietary potassium [J]. Hypertension 1999; 33:18?23.
    [58] Manning RD,Hu I,Tan DY,et al.Pole of abnormal nitric oxide systems in salt-sensitive hypertension[J].Am hypertens,2001;14:685.
    [59] Law M R ,Frost C D ,Wald N J .By how much does dietary salt reduction lower blood pressure[J ] . I Br Med J ,1991 ,302 :811-814.
    [60] Wright JT Jr, Rahman M, Scarpa A, et al.Determinants of salt sensitivity in black and white normotensive and hypertensive women. Hypertension, 2003, 42: 1087- 1092.
    [61] Aviv A, Hollenberg NK, Weder A. Urinary potassium excretion and sodium sensitivity in blacks.Hypertension, 2004, 43: 707 -713.
    [62]刘治全.血压的盐敏感性与盐敏感性高血压.心脏杂志,2000;12:302
    [63]牟建军.盐摄入量与血压.刘治全,主编.盐与高血压.北京:北京医科大学中国协和医大学联合出版社, 1997.8- 19.
    [64] Negro Mc, Oliver M, Arocha L, et al.Arterial hypertension in the adolescent: its possible relation to the salt taste threshold.Rev Esp Cardiol, 1992, 45: 227- 231.
    [65] Zumkley H, Vetter, Mandelkow T, et al. Taste sensitivity for sodium chloride inhypertensive, normotensive and hypertensive subjects. Nephron, 1987, 47: 132- 134.
    [66] Willett W,Stampfer MJ.Total energy intake:implications for epidemiology analyses[J]. Am J Epidemiol,1986,124:17-27.
    [67] Agnes Jager, Piet J.Kostense, et al.Microalbuminuria and Peripheral Arterial Disease Are Independent Predictors of Cardiovascular and All-Cause Mortality, Especially Among Hypertensive Subjects [J]. Arteriosclerosis, Thrombosis, and Vascular Biology. 1999;19:617-624.
    [68] Department of Health and Human Services (HHS) and Department of Agriculture (USDA) . The dietary guidelines for Americans[ EB /OL ]. ( 2008 - 08 - 29 ) [ 2008 - 09 - 10 ]. http: / /www. health.gov/dietaryguidelines/dga2005 /document/html/ chap ter8. htm.
    [69] Cutler JA, Follmann D, Allender PS. Randomized trials of sodium reduction: an overview. Am J Clin Nutr.1997; 65 ( supp l 2) : 643S - 651S. .
    [70] GraudalNA, Galloe AM, Garred P. Effects of sodium restriction on blood pressure, renin, aldosterone, catecholamines, cholesterols, and triglyceride: a meta - analysis. JAMA. 1998; 279: 1383 - 1391. .
    [71] Midgley JP, Matthew AG, Greenwood CM, Logan AG.Effect of reduced dietary sodium on blood p ressure: a meta - analysis of randomized controlled trials. JAMA.1996; 275: 1590 - 1597. .
    [72] Whelton P K, He J, Cutler J A, et al. Effects of oral potassium on blood pressure: meta-analysis of randomized controlled clinical trials[J]. JAMA, 1997, 277:1624-32.
    [73] Krishna G G, Kapoor S C. Potassium depletion exacerbates essential hypertension[J]. Ann Intern Med, 1991, 115: 77-83.
    [74] Williams G H, Hollenberg N K. Nonmodulating hypertension: a Subset of sodium-sensitivehypertension[J]. Hypertension,1991,17: Suppl :I81-I85.
    [75] Tobian L, Lange J, Ulm K, et al. Potassium reduces cerebral hemorrhage and death rate in hypertensive rats,even when blood pressure is not lowered[J]. Hypertension 1985, 7:I110-I114.
    [76] Liu D T, Wang M X, Kincaid-Smith P, et al. The effects of dietary potassiumon vascular and glomerular lesions in hypertensive rats[J]. Clin Exp Hypertens, 1994, 16:391-414.
    [77] Whelton P K. Potassium and blood pressure. In: Izzo JL Jr, Black HR, eds. Hypertension primer[M]. 3rd ed. Dallas: American Heart Association /Council on High Blood Pressure Research,2003:280-2.
    [78] Dolson G M, Ellis K J, Bernardo M V, et al. Acute decreases in serum potassium augment blood pressure[J]. Am J Kidney Dis,1995, 26:321 -6.
    [79] Krishna G G, Kapoor S C. Potassium depletion exacerbates essential hypertension[J]. Ann Intern Med, 1991, 115: 77-83.
    [80] Morris R C Jr, Sebastian A, Forman A, et al. Normotensive salt sensitivity: effects of race and dietary potassium[J].Hypertension, 1999, 33:18-23.
    [81] Siani A, Strazzullo P, Giacco A, et al. Increasing the dietary potassium intake reduces the need for antihypertensive medication[J]. Ann Intern Med, 1991, 115:753-9.
    [82] He F J , MacGregor GA. Beneficial effects of potassium [J ]. Brit Med J, 2001,323:497~501.
    [83] Whelton P , He J , Cutler J , et al. Effects of oral potassium on blood pressure [J ],JAMA,1997,277:1624~1632.
    [84] Kaplan N M. Primary hypertension:pathogenesis. In: Kaplan NM,ed. Kaplan & clinical hypertension[M]. 9th ed.Philadelphia:Lippincott Williams & Wilkins, 2006: 50-121.
    [85]顾东风,Jiang He ,吴锡桂,等.中国成年人高血压患病率、知晓率、治疗和控制状况[J ] .中华预防医学杂志,2003 ,39 (2):84-89.
    [86] Dietary reference intakes for water, potassium, sodium, chloride,and sulfate. Washington, DC: National Academies Press, 2005.
    [87] Nerbrand C, Agréus L, Arvidsson Lenner R, Nyberg P, Svdsudd K. The influence of calcium and magnesium in drinking waterand diet on cardiova -scular risk factors in individuals living in hard and soft water areas with differences in cardiovascular mortality [J]. BMC Public Health 2003; 3:21.
    [88] Yang C, Chiu H. Calcium and magnesium in drinking water and the risk of death from hypertension [J ]. Am J Hypertens 1999; 12:894?899.
    [89] Blair J L, Warner D S, Todd M M. Effects of elevated plasma magnesium versus calcium on cerebral ischemic injury in rats [J]. Stroke 1989; 20:507?512.
    [90] Gangui M, Tobian L, Sugimoto T. High magnesium increase blood pressure and enhance stroke mortality in hypertensive shrsp rats [J ]. Am J Hypertension 1989; 15:780?783.
    [91]神经应激时冠心病患者冠状动脉的舒缩反应中华心血管病杂志2004,32(6) Chin J Cardiol,June 2004,Vol. 32 No.6 .
    [92]玉素甫江·阿不拉,程祖亨,汤宝鹏,等.塔克拉玛干“沙漠人”心电图明尼苏达编码分析.中华医学杂志2006,86(46):3277-3279.
    [93] National Institutes of Health. Clinical guidelines on the identification, evaluation, and treatment of overweight and obesity in adults - the evidence report. Obes Res.1998; 6 ( supp l 2) : 51S - 209S.
    [94] He J , Whelton PK, Appel LJ, Charleston J , KlagMJ.Long - term effects ofweight loss and dietary sodium reduction on incidence of hypertension. Hypertension.2000; 35: 544 - 549.
    [95] Trials of Hypertension Prevention Collaborative Research Group. Effects of weight loss and sodium re2duction intervention on blood p ressure and hypertension incidence in overweight peop le with high– normal blood p ressure: the Trials of Hypertension Prevention,phase II. Arch InternMed. 1997; 157: 657 - 667.
    [96] StevensVJ , Obarzanek E, Cook NR, et al for the Trials of Hypertension Prevention Research Group. Long -term weight loss and changes in blood p ressure: results of the Trials of Hypertension Prevention, phase II. Ann Intern Med. 2001; 134: 1 - 11.
    [97] Iwai N,Tago N, Yasui N,et al.Genetic analysis of 22 candidate genes for hypertension in the Japanese population[J].J Hypertens.2004,22: 1119-26.
    [1] Schroeder, H. A. Relation Between Mortality from Cardiovascular Disease and Treated Water Supplies. J.A.M.A. 172:1902-1908 (Apr. 23), 1960.
    [2] Loyke H F. Effects of elements in human blood pressure control [J] . Biol Trace Elem Res , 2002 , 85 : 193~208.
    [3] Schroeder H A , Perry H. Antihypertensive effects of metal binding agents [J] . J Lab Clin Med , 1955 , 46 : 416~522.
    [4] McCarron D.Calcium metabolism and hypertension [J].Kidney Int,1989,35: 717~736.
    [5] Chen C , Hsuch Y, Lai M, et al. Increased prevalence of hypertension and long - term arsenic exposure [J ] . Hypertension , 1995 , 25 (1) : 53~60.
    [6] Perry H , Koop S , Perry E , et al. Hypertension and associated cardiovascular abnormalities induced by chronic barium feedings [J] .J Toxicol Environ Health , 1989 , 28 : 373~384.
    [7] Harlan W, Landis R. Schmouder R , et al. Blood lead and blood pressure [J]. JAMA , 1985 , 253 : 530~534.
    [8] Bank W, Pleasure D , Suziki K, et al. Thallium poisoning [J] . Arch Neurol , 1972 , 26 : 456~464.
    [9] Joint FAO/ WHO/ IAEA expert consultation. Trace elements in human nutrition and health [R] . Geneva : WHO , 1996.
    [10]秦俊法,李增禧.微量元素与高血压Ⅱ.微量元素在血压调控中的作用及机制[J ] .广东微量元素科学, 2003 ,10 (8) : 1~16.
    [11] Resnick L , Nicholson J , Laragh J . Calcium metabolism and rennin aldosterone system in essential hypertension [J] .Cardio Pharmacol ,1985 ,7(Suppl 6) : S187~S193.
    [12] Reusser M, McCarron D. Micronutrient effects on blood pressure regulation [J] . Nutr Rev , 1994 , 52 : 367~375.
    [13] Groudal N , Galloc A , Gerred P. Effects of sodium restriction on blood ressure , renin , aldosterone , catachblamine and trygliceride [J ] . JAMA , 1998 , 279 (17) : 1383~1389.
    [14] de Wardener HE ,MacGregor GA.Sodium and blood pressure [J] .Current Opinion Cardiol , 2002 , 17 (4) : 360~367.
    [15] Friberg P , Meredith I , Jennings G, et al. Evidence for increased renal norepine -phrine overflow during sodium restriction in humans [J ].Hypertension, 1990 , 16 : 121~130.
    [16] He F J , MacGregor GA. Beneficial effects of potassium [J ] . Brit Med J , 2001 , 323 : 497~501.
    [17] Whelton P , He J , Cutler J , et al. Effects of oral potassium on blood pressure [J ] , JAMA , 1997 , 277 : 1624~1632.
    [18] Vivoli G, Bergomi M, Roverti S , et al. Zinc , copper and zinc - or copper - dependent enzymes in human hypertension [J] . Biol Trace Elem Res , 1995 , 49 : 97~103.
    [19] Michaeli J , Bentshay D , Kidron R , et al. Severe hypertension and lithium intoxication [ J ] . JAMA , 1984 , 251 :1680.
    [20] Friberg L , Elinder C G, Kjellstrom T, et al. Cadmium and health [J ] . Chicago : CRC Press , 1985. 11.
    [21] Perry H , Erlander M. Metal - induced hypertension following chronic feeding of low doses of cadmium and mercury [J ] .J Lab Clin Med , 1974 , 83 : 541~547.
    [22]张世联,王敏,王薇,等.硒对自发性高血压大鼠Na + - K+ - ATP酶、Ca2 + - Mg2 + -ATP酶的影响[A] .中国营养学会第六届微量元素营养学术会议论文摘要汇编[C] . 1999. 19~20.
    [23] Christina Nerbrand, Lars Agréus, et al.The influence of calcium and agnesium in drinking water and diet on cardiovascular risk factors in individuals living in hard and soft water areas with differences in cardiovascular mortality [J ]. BMC Public Health2003, 3:21~30.
    [24] Ragnar Rylander,Maurice J Arnaud. Mineral water intake reduces blood pressure among subjects with low urinary magnesium and calcium levels. [J].BMC Public Health 2004, 4:56~60.
    [25] Yang C , Chiu H. Calcium and magnesium in drinking water and the risk of death from hypertension [J ] . Am J Hypertens , 1999 , 12 : 894~899.
    [26] Neri.Cardiovascular disease and the mineral content of drinking water. [J]. Br Med Bull1971,27: 21.