title: Consider the study populations when assessing results: comment on the article by Drosos et al.
authors.forename: L I
authors.initials: LI
authors.lastname: Sakkas
mesh_terms: D001172:Arthritis, Rheumatoid / Q000208:ethnology*; D006115:Greece; D006801:Humans; D011320:Primary Health Care; D006113:United Kingdom