pubmed:affiliation |
Department of Research and Evaluation, Kaiser Permanente Southern California, 393 E Walnut St, Pasadena, CA 91188, USA. diana.b.petitti@kp.org
|
pubmed:publicationType |
Journal Article,
Comparative Study,
Research Support, U.S. Gov't, P.H.S.,
Multicenter Study,
Research Support, N.I.H., Extramural
|