Use the collections feature with a free QxMD account.
Use Read by QxMD to access full text via your institution or open access sources.
Read also provides personalized recommendations to keep you up to date in your field.
Existing User
Sign InNew to Read
Sign UpHealth services research methods
• Drug and device development, pivotal clinical trials, post-market studies, quasi experimental research methods, registry trials , methods to reduce bias in analysis , trial / study design issues