Building a robust, scalable and standards-driven infrastructure for secondary use of EHR data: The SHARPn project. - Susan Rea; Jyotishman Pathak; Guergana K. Savova; Thomas A. Oniki; Les Westberg; Calvin E. Beebe; Cui Tao; Craig G. Parker; Peter J. Haug; Stanley M. Huff; Christopher G. Chute (J. Biomed. Informatics, 2012)