title: Efficacy and Safety of Hyaluronic Acid with and without Radiofrequency for Forehead Augmentation: A Pilot Study Using Three-Dimensional Imaging Analysis.
authors: Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea.
authors: Moo Yeol
authors: MY
authors: Hyun
authors: Department of Otolaryngology-Head and Neck Surgery, Chung-Ang University College of Medicine, Seoul, Korea.
authors: Seog Kyun
authors: SK
authors: Mun
authors: Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea.
authors: Beom Joon
authors: BJ
authors: Kim
authors: Aesthetic Research Team, Amore Pacific Corporation Research and Development Center, Yongin, Korea.
authors: Hyuk
authors: H
authors: Kim
authors: Aesthetic Research Team, Amore Pacific Corporation Research and Development Center, Yongin, Korea.
authors: Won-Seok
authors: WS
authors: Park