Daftarian N, Lima A, Marozoff S, Ojo D, Levasseur SD, Maberley DAL, Hoens A, Esdaile J, Dawes M, Aviña-Zubieta JA, Adante B, Bhui RD, Bhui SB, Butler M, Chui L, Erasmus M, Etminan M, Godinho D, Hay E, Hollands H, Hoonjan M, Joe A, Lukaris A, Mammo Z, Navajas E, Pakzad-Vaezi K, Sanmugasunderam S, Shojania K; Investigators of INTACT study group