5Fleming TR,DeMets DL. Surrogate end points in clinical trials : are we being misled ? Ann Intern Med, 1996,125 ( 7 ): 605 -613.
6The World Health Organization quality of Life assessment (WHOQOL) :Position paper from the World Health Organization. Soc Sci Med, 1995,41 (10) : 1403- 1409.
7Levin JS,Glass TA,Kushi LH,et al. Quantitative methods in research on complementary and alternative medicine. A methodological manifesto. NIH Office of Alternative Medicine. Med Care, 1997,35 (11:) : 1079 - 1094.
8Sackett DL, Straus SE,Richardson WS, et al. Evidence-based medicine:how to practice and teach EMB. 2nd edition London : Churchill LivingstOn, 2000 : 1 - 10.
