Title Fat injection : from filling to regeneration / Sydney R. Coleman, MD, FACS, Clinical Assistant Professor of Plastic Surgery, Hansjög Wyss Department of Plastic Surgery, NYU School of Medicine, NYU Langone Medical Center, New York, New York, Riccardo F. Mazzola, MD, Department of Clinical Sciences and Community Health, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milano, Italy, Lee L.Q. Pu, MD, PhD, FACS, FICS, Professor of Surgery, Division of Plastic Surgery, University of California, Davis, Sacramento, California