pubmed:affiliation |
Center for Clinical Trials, Johns Hopkins University, 615 N Wolfe St, Room W5010, Baltimore, MD 21205, USA. jholbroo@jhsph.edu
|
pubmed:publicationType |
Journal Article,
Clinical Trial,
Research Support, U.S. Gov't, P.H.S.,
Randomized Controlled Trial,
Research Support, Non-U.S. Gov't,
Multicenter Study
|