Cohen, Joel L A Randomized, Blinded Study to Validate the Merz Hand Grading Scale for Use in Live Assessments. [electronic resource] - Dermatologic surgery : official publication for American Society for Dermatologic Surgery [et al.] Dec 2015 - S384-8 p. digital Publication Type: Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't ISSN: 1524-4725 Standard No.: 10.1097/DSS.0000000000000553 doi Subjects--Topical Terms: AdolescentAdultAgedAged, 80 and overCosmetic TechniquesDermal Fillers--administration & dosageFemaleHandHumansInjectionsMaleMiddle AgedObserver VariationRejuvenationReproducibility of ResultsSingle-Blind MethodSkin Aging--drug effectsYoung Adult