Feeding tubes and cultural shift: strong causal inference from weak study design

Feeding tubes and cultural shift: strong causal inference from weak study design / P.L. Moja, N. Santesso, C. Palmhoj, J. Grimshaw. - In: BMJ. BRITISH MEDICAL JOURNAL. - ISSN 0959-535X. - 329:7464(2004 Sep 11), pp. 491-494.