Overview of the special supplement issue.
McClellan
M B
MB
Newhouse
J P
JP
D003625:Data Collection / Q000379:methods; D003627:Data Interpretation, Statistical; D006302:Health Services Research / Q000379:methods*; D006801:Humans; D017059:Models, Econometric; D017063:Outcome Assessment, Health Care / Q000379:methods*; D012107:Research Design