Subject global evaluation and subject satisfaction using injectable poly-l-lactic acid versus human collagen for the correction of nasolabial fold wrinkles

Spencer A. Brown, Rod J. Rohrich, Leslie Baumann, Fredric S. Brandt, Steven Fagien, Scott Glazer, Jeffrey M. Kenkel, Nicholas J. Lowe, Gary D. Monheit, Rhoda S. Narins, Marta I. Rendon, William Philip Werschler