Methodological aspects in the assessment of treatment effects in observational health outcomes studies

Methodological aspects in the assessment of treatment effects in observational health outcomes studies
J.M. Haro, S. Kontodimas, M.A. Negrín, M. Ratcliffe, D. Suárez, F. Windmeijer. Applied Health Economics and Health Policy, 2006, 5 (1), pp. 11 - 25.   Fulltext   Abstract
Journal article