[1] Univ Miami, Miami Itch Ctr, Miller Sch Med, Miami, FL USA
[2] Univ Hosp Munster, Ctr Chron Pruritus, Munster, Germany
[3] Charite, Inst Allergol, Berlin, Germany
[4] Guys & St Thomas NHS Fdn Trust, St Johns Inst Dermatol, London, England
[5] George Washington Univ, Sch Med & Hlth Sci, Washington, DC USA
[6] UCLA, Sch Med, Dept Med Dermatol, Los Angeles, CA USA
[7] Galderma Labs, Dallas, TX USA
[8] Galderma R&D, Zug, Switzerland
[9] Univ Maryland, Sch Med, Dept Dermatol, Baltimore, MD USA
[10] Univ Maryland, Maryland Itch Ctr, Sch Med, Baltimore, MD USA