Affiliation: | 1. University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania;2. Pinney Associates, Pittsburgh, Pennsylvania;3. GlaxoSmithKline Consumer Healthcare, Pittsburgh, Pennsylvania;4. St Francis Hospital, Wilmington, Delaware;1. Université Tunis Elmanar, Laboratoire de physique de la Matière Molle, Faculté des Sciences de Tunis, Tunisia;2. Centre de Recherche Paul Pascal Pessac, France |