title: Group for Research and Assessment of Psoriasis and Psoriatic Arthritis - GRAPPA (2003-2013).
authors: Morton
authors: M
authors: Scheinberg
mesh_terms: D015535:Arthritis, Psoriatic / Q000175:diagnosis / Q000628:therapy; D035843:Biomedical Research; D049674:History, 21st Century; D006801:Humans; D011565:Psoriasis / Q000175:diagnosis / Q000628:therapy; D012958:Societies, Scientific / Q000266:history