Questionnaire order significantly increased response to a postal survey sent to primary care physicians.

Publication info: 
J Clin Epidemiol. 2008 Feb; 61(2):177-85.
PMID: 
18177791
Publication date: 
February, 2008
Authors: 
Drummond FJ, Sharp L, Carsin AE, Kelleher T, Comber H
Publication type: