Why do the results of randomised and observational studies differ?

Author(s):: Vandenbroucke, J.P. (0000-0001-5668-6716)

Published: 2011
Publication type: Article / Letter to editor

Date issued: 2011-11-07
Language: English
Is part of: British medical journal (2011), Vol. 343, p. -
hdl: 1887/111473
doi: 10.1136/bmj.d7020