1. Acne vulgaris: establishing effectiveness of drugs intended for treatment Publication: Silver Spring, MD : Center for Drug Evaluation and Research, May 2018 Subject(s): Acne Vulgaris -- drug therapyDrug Evaluation -- standardsClinical Trials as Topic -- standardsEndpoint DeterminationResearch Design -- standardsHumansUnited StatesUnited States. Department of Health and Human Services.United States. Food and Drug Administration.