[1] McGill Univ, Div Expt Med, Fac Med & Hlth Sci, Montreal, PQ, Canada
[2] McGill Univ, Ctr Outcome Res Evaluat, Hlth Ctr, Res Inst, Montreal, PQ, Canada
[3] McGill Univ, Chron Viral Illness Serv, Dept Family Med, Montreal, PQ, Canada
[4] McGill Univ, Dept Psychiat, Fac Med, Montreal, PQ, Canada
[5] Montreal Neurol Inst, Dept Neurol & Neurosurg, Montreal, PQ, Canada
[6] Montreal Neurol Inst, Chron Viral Illness Serv, Montreal, PQ, Canada
[7] McGill Univ, Dept Psychol, Montreal, PQ, Canada
[8] McGill Univ, Dept Med, Montreal, PQ, Canada
[9] McGill Univ, Sch Phys & Occupat Therapy, Montreal, PQ, Canada