1. Anitibiotics and cacsarean section. In: Chalmners 1, Enkin MN, Keirse MJNC, cds. EIfestoLe cart, inz pregnancy anid uhlildhirth;Enkin Mk1, Enkini E, Chalmers I Hemminki 1,1989
2. Materials and methods Llsed in synthesizing evidence to evaluate the ceffects of care durinig pregnancy anld childbirth;Chalmers, I.,1989
3. Beta-blockade during and after myocardial itifarction: an overview of' the randomised controllcd trials;Prog Cardiovasc Di's,1985
4. Oxford Regional Health Authority. Sudmmarv of cost statements 1986-1987,1987
5. Non-parametr'c statistics fowr the behavioral sciences;Sicgel, S.,1956