pubmed:affiliation |
Department of Family Medicine, Medical University of South Carolina, 295 Calhoun Street, Charleston, SC 29425, USA. kingde@musc.edu
|
pubmed:publicationType |
Journal Article,
Comparative Study,
Research Support, U.S. Gov't, Non-P.H.S.,
Multicenter Study,
Research Support, N.I.H., Extramural
|