Paper Title
A MVC Based User Interface Design For Clinical Research Data Extraction

Abstract
One of the research orientedintegrated data repository, Biomedical Translational Research Information System (BTRIS),developed by US National Institutes of Health, providesthree kinds of data sets (demographic, laboratory, and pathology) to other research departments for clinical studies through the BTRIS HL7 web service.In order to decrease the learning curve and adoption barrier of using BTRIS HL7, this research study developed an Integrated Data Repository (IDR) query web application (IQWA) to query BTRIS more efficiently.We adopted the Model-View-Controller (MVC) design pattern framework to design a well decoupledIQWA to access BTRIS.The IQWA has aneasy user query interface for clinical researchers to submit the query criteria.The navigation logic of the IQWA Controllertriggers the data access business logic (BTRIS access functions) basedon the Model by the query criteria and presents the query results on the View to the researchers� browser. Keywords- BTRIS, HL7, MVC, Clinical Research.