Kaushal, Sunil Kumar Raina. Observational studies versus controlled clinical trials for efficacy and effectiveness of a drug. Indian J Med Res 2015; 141:489-90. – Dr. Rajendra Prasad Govt. Medical College & Hospital

A Decrease font size. A Reset font size. A Increase font size.

Kaushal, Sunil Kumar Raina. Observational studies versus controlled clinical trials for efficacy and effectiveness of a drug. Indian J Med Res 2015; 141:489-90.