[1] Univ Washington, Dept Pediat, Div Dermatol, Sch Med, Seattle, WA USA
[2] Seattle Childrens Hosp, Seattle, WA USA
[3] Sutter Med Fdn, Dept Dermatol, Sacramento, CA USA
[4] Brown Univ, Dept Dermatol, Warren Alpert Med Sch, Providence, RI USA
[5] NYU, Ronald O Perelman Dept Dermatol, Grossman Sch Med, New York, NY USA
[6] Natl Jewish Hlth, Dept Pediat, Denver, CO USA
[7] Univ Toronto, Dept Med, Div Dermatol, Toronto, ON, Canada
[8] Womens Coll Hosp, Womens Coll, Res Inst, Toronto, ON, Canada
[9] Univ Calif San Diego, Rady Childrens Hosp, Div Pediat & Adolescent Dermatol, San Diego, CA USA
[10] Amer Acad Dermatol, Rosemont, IL USA
[11] Northwestern Univ, Dept Dermatol, Feinberg Sch Med, Chicago, IL USA
[12] Northwestern Univ, Pediat, Feinberg Sch Med, Chicago, IL USA
[13] Oregon Hlth & Sci Univ, Dept Dermatol, Portland, OR USA
[14] George Washington Univ, Dept Dermatol, Sch Med & Hlth Sci, Washington, DC USA
[15] Univ Wisconsin, Dept Pediat, Sch Med & Publ Hlth, Madison, WI USA
[16] Univ Calif Davis, Dept Dermatol, Sacramento, CA USA
[17] Mayo Clin, Dept Dermatol, Rochester, MN USA
[18] Mayo Clin, Dept Pediat, Rochester, MN USA