Hifinger M, Hiligsmann M, Ramiro S, Watson V, Berghea F, Pentek M, Keat A, Severens JL, Fautrel B, Boonen A. Influence of disease activity on RA treatment choices in countries with restricted access to expensive, innovative drugs: a discrete choice experiment among rheumatologists. RMD open. 2017 Sep 4;3(2):E000453. doi: 10.1136/rmdopen-2017-000453
Niaura R, Britt DM, Shadel WG, Goldstein M, Abrams D, Brown R. Symptoms of depression and survival experience among three samples of smokers trying to quit. Psychol Addict Behav. 2001 Mar 1;15(1):13-7.