[1] Univ Pittsburgh, Med Ctr, Childrens Hosp Pittsburgh, Div Pulm Med Allergy & Immunol, Pittsburgh, PA USA
[2] Univ Pittsburgh, Dept Psychol, Pittsburgh, PA 15260 USA
[3] Harvard Univ, Sch Med, Brigham & Womens Hosp, Channing Div Network Med, Boston, MA USA
[4] Univ Calif San Francisco, Dept Bioengn & Therapeut Sci, San Francisco, CA 94143 USA
[5] Univ Calif San Francisco, Dept Med, San Francisco, CA 94143 USA
[6] Inst Salud Carlos III, CIBER Enfermedades Resp, Madrid, Spain
[7] Brown Univ, Sch Med, Dept Psychiat & Human Behav, Providence, RI 02912 USA
[8] Univ Puerto Rico, Behav Sci Res Inst, San Juan, PR 00936 USA
[9] Univ Arizona, Arizona Resp Ctr, Tucson, AZ USA
[10] Univ Arizona, Inst BIO5, Tucson, AZ USA
[11] Hosp Nacl Ninos Dr Carlos Saenz Herrera, Div Pediat Pulmonol, San Jose, Costa Rica
[12] Univ Chicago, Dept Human Genet, Chicago, IL 60637 USA
[13] Johns Hopkins Univ, Dept Med, Baltimore, MD USA
[14] Univ Wisconsin, Dept Pediat, Sch Med & Publ Hlth, Madison, WI USA
[15] Univ Wisconsin, Dept Med, Sch Med & Publ Hlth, Madison, WI USA
[16] Washington Univ, Sch Med, Dept Pediat, St Louis, MO 63110 USA
[17] Natl Jewish Hlth, Dept Pediat, Denver, CO USA
[18] NIEHS, NIH, Dept Hlth & Human Serv, Res Triangle Pk, NC 27709 USA
[19] Univ So Calif, Keck Sch Med, Dept Prevent Med, Los Angeles, CA 90033 USA
[20] Childrens Hosp Philadelphia, Res Inst, Ctr Appl Genom, Philadelphia, PA 19104 USA
[21] Univ Penn, Perelman Sch Med, Dept Pediat, Philadelphia, PA 19104 USA
[22] Emory Univ, Dept Psychiat & Behav Sci, Atlanta, GA 30322 USA
[23] Georgia Inst Technol, Ctr Adv Brain Imaging, Atlanta, GA 30332 USA
[24] Georgia State Univ, Atlanta, GA 30303 USA