pubmed:affiliation |
Stanford University Medical Center, Center for Health Policy and Center for Primary Care and Outcomes Research, Stanford Sleep Disorders Center, and Lane Medical Library, Stanford, California 94305, USA.
|
pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.,
Research Support, U.S. Gov't, Non-P.H.S.,
Review
|