Randomised controlled trials :
Jadad, A R
Randomised controlled trials : a user's guide - BMJ Publishing Group, 1998 - 123p
0727912089
Clinical trials
Evidence based practice
WB 330.
Randomised controlled trials : a user's guide - BMJ Publishing Group, 1998 - 123p
0727912089
Clinical trials
Evidence based practice
WB 330.