[1] Northwestern Univ, Feinberg Sch Med, Chicago, IL USA
[2] Univ Calif San Diego, San Diego, CA USA
[3] Rady Childrens Hosp San Diego, San Diego, CA USA
[4] George Washington Univ, Sch Med & Hlth Sci, Washington, DC USA
[5] Univ Sheffield, Sheffield Dermatol Res, IICD, Sheffield, England
[6] Sheffield Childrens Hosp, Sheffield, England
[7] Med Univ Vienna, Vienna, Austria
[8] Trinity Coll Dublin, St James Hosp, Sch Med, Dublin, Ireland
[9] Univ Hosp Schleswig Holstein, Kiel, Germany
[10] Nantes Univ, Hosp Ctr, Nantes, France
[11] Pfizer Inc, Collegeville, PA USA
[12] Pfizer Corp Austria GmbH, Vienna, Austria