3Chalmers TC,Matta RJ,Smith H Jr,Kunzler AM.Evidence favoring the use of anticoagulants in the hospital phase of acutemyocardial infarction[J].N Engl J Med,1977,297:1091.
4Sacks H,Chalmers TC,Smith H Jr.Randomized versus historical controls for clinical trials[J].Am J Med,1982,72:233-240.
5Schulz KF,Chalmers I,Hayes RJ,Altman DG.Empirical evidence of bias:dimensions of methodological quality associated with estimates of effects in controlled trials[J].JAMA,1995,273 (5):408-412.
7Schulz,Kenneth F.Subverting randomization in controlled trials[J].JAMA,1995,274 (18):1456-1458.
8Altman DG,Schulz KF.Statistics notes:Concealing treatment allocation in randomised trials[J].BMJ,2001,323 (7310):446-447.
9Schulz KF,Chalmers I,Grimes DA,et al.Assessing the quality of randomization from reports of controlled trials published in obstetrics and gynecology journals[J].JAMA,1994,272 (2):125-128.
10Fletcher RH,Fletcher SW,Wagner EH.Clinical epidemiologythe essentials[M].4rd ed.Baltimore:Ippincott Williams & Wilkins,2005:131-132.
二级参考文献13
1Rosen JF,Mushak P. Primary prevention of childhood lead poisoning:The only solution. New Engl J Med, 2001, 344:1470-1471.
2Shen XM, Yan CH, Guo D, et al. Low-level prenatal exposure and neurobehavioral development of children in the first year of life: A prospective study in Shanghai. Environ Res, 1998, 79:1-8.
3Shen XM, Wu SH, Yan CH, et al. Delta-aminolevulinate dyhydratase polymorphism and blood lead levels in Chinese children. Environ Res, 2001,85:185-190.
4Mehta S, Binns HJ. What do parents know about lead poisoning? Arch Pediatri Adolesc Med, 1998,152:1213-1218.
5Porter EJ. Parental actions to reduce children′s exposure to lead: some implication for primary and secondary prevention. Fam Community Health, 1997,20:24-37.
6Mahon I . Caregivers′ knowledge and perceptions of preventing childhood lead poisoning. Public Health Nurs, 1997,14:169-182.
7Chaisson CE, Glotzer DE. Counseling to prevent childhood lead poisoning. J Natl Med Assoc, 1996,88:489-492.
8Smitherman CH. Child and caretaker attributes associated with lead poisoning in young children. Pediatric Nurs, 1996,22:320-326.
9Kimbrough RD, LeVois M, Webb DR. Management of children with slightly elevated blood lead levels. Pediatrics, 1994,93:188-191.
10Schultz B, Pawel D, Murphy A. A retrospective examination of in-home educational visits to reduce childhood lead levels. Environ Res, 1999,80:364-368.