title: Joint count reliability in psoriatic arthritis observational trials--an unreported problem.
authors.forename: William
authors.initials: W
authors.lastname: Tillett
authors.forename: Gavin
authors.initials: G
authors.lastname: Shaddick
authors.forename: Eleanor
authors.initials: E
authors.lastname: Korendowych
authors.forename: Corinne S
authors.initials: CS
authors.lastname: de Vries
authors.forename: Neil
authors.initials: N
authors.lastname: McHugh
mesh_terms: D018501:Antirheumatic Agents / Q000627:therapeutic use*; D015535:Arthritis, Psoriatic / Q000175:diagnosis* / Q000188:drug therapy; D002986:Clinical Trials as Topic; D018450:Disease Progression; D006801:Humans; D007596:Joints / Q000473:pathology*; D011379:Prognosis; D015203:Reproducibility of Results; D012720:Severity of Illness Index
chemical_list: D018501:Antirheumatic Agents