methods 4 Clinical Trials as Topic 3 Clinical trials 3 AIDS (Disease) 2 Anesthesia 2 Handbooks 2 Hospitals, District 2 Methodology 2 Operations research 2 Pregnancy Complications 2 Research 2 Women's Health 2 standards 2 therapy 2 Alternative medicine 1 Anatomy, Regional 1 Anticarcinogenic Agents 1 Antimalarials 1 Birth control 1 Cancer 1 Community health aides 1 Complementary Therapies 1 Complications 1 Consumer Advocacy 1 Consumer education 1 Contraceptives 1 Cost control 1 Cost of operation 1 Costs and Cost Analysis 1 Delivery, Obstetric 1