[1] King Saud Univ, Coll Med, Prince Naif Ctr Immunol Res, Riyadh, Saudi Arabia
[2] King Saud Univ, Coll Med, Asthma Res Chair, Dept Pediat, Riyadh, Saudi Arabia
[3] King Saud Univ, Coll Med, Univ Sleep Disorders Ctr, Riyadh, Saudi Arabia
[4] McGill Univ, Meakins Christie Labs, Montreal, PQ, Canada
[5] Univ Sharjah, Coll Med, Sharjah, U Arab Emirates