Nicholas Schmidt, PhD; Eugene H. Gans, PhD Nicholas Schmidt, PhD; Eugene H. Gans, PhD are from Medicis Pharmaceutical Corporation, Scottsdale, Arizona
Valerie D. Callender, MD is from Callender Skin and Laser Center, Mitchellville, Maryland. Norman Preston, PhD; Cris Osborn, PhD; Lori Johnson, PhD; and Ronald W. Gottschalk, MD are from Galderma