[1] Mayo Clin, Dept Dermatol, Rochester, MN USA
[2] Mayo Clin, Dept Pediat, Rochester, MN USA
[3] Univ Toronto, Dept Med, Div Dermatol, Toronto, ON, Canada
[4] Womens Coll Hosp, Womens Coll Res Inst, Toronto, ON, Canada
[5] Sutter Med Fdn, Dept Dermatol, Sacramento, CA USA
[6] Brown Univ, Dept Dermatol, Warren Alpert Med Sch, Providence, RI USA
[7] NYU, Ronald O Perelman Dept Dermatol, Grossman Sch Med, New York, NY USA
[8] Natl Jewish Hlth, Dept Pediat, Pediat Behav Hlth, Denver, CO USA
[9] Univ Calif San Diego, Rady Childrens Hosp San Diego, Dept Dermatol, San Diego, CA USA
[10] Univ Calif San Diego, Rady Childrens Hosp San Diego, Dept Pediat, San Diego, CA USA
[11] Amer Acad Dermatol, Rosemont, IL USA
[12] Northwestern Univ, Feinberg Sch Med, Dept Dermatol, Chicago, IL USA
[13] Northwestern Univ, Dept Pediat, Feinberg Sch Med, Chicago, IL USA
[14] Oregon Hlth & Sci Univ, Dept Dermatol, Portland, OR USA
[15] George Washington Univ, Sch Med & Hlth Sci, Dept Dermatol, Washington, DC USA
[16] Univ Wisconsin, Dept Pediat Dermatol & Med Microbiol Immunol, Sch Med & Publ Hlth, Madison, WI USA
[17] Univ Calif, Dept Dermatol, Sacramento, CA USA
[18] Univ Washington, Seattle Childrens Hosp, Dept Pediat, Div Dermatol,Sch Med, Seattle, WA USA
[19] Amer Acad Dermatol, 9500 Bryn Mawr Ave,Suite 500, Rosemont, IL 60018 USA