INTERPRETATION OF OBSERVATIONAL STUDIES.

Autor: Jepsen, P.1 pj@soci.au.dk, Johnsen, S. P.1, Gillman, M. W.2, Sørensen, H. T.1
Zdroj: Heart. Aug2004, Vol. 90 Issue 8, p956-960. 5p.
Databáze: Academic Search Ultimate