title: Easy method to distinguish epidermal side through writing figure "4" over a suction blister.
authors.affiliation: Department of Dermatology and Cutaneous Biology Research Institute, College of Medicine, Yonsei University, Seoul, Korea.
authors.forename: Taegyun
authors.initials: T
authors.lastname: Kim
authors.forename: Hyo Jin
authors.initials: HJ
authors.lastname: Roh
authors.forename: Ji Young
authors.initials: JY
authors.lastname: Kim
authors.forename: Sungmin
authors.initials: S
authors.lastname: Noh
authors.forename: Sang Ho
authors.initials: SH
authors.lastname: Oh
mesh_terms: D006801:Humans; D017496:Hypopigmentation / Q000601:surgery; D016038:Skin Transplantation / Q000379:methods*