RT Journal Article SR Electronic T1 Hair’s the Question: White/Gray Hair JF International Society of Hair Restoration Surgery FD Publication of the International Society of Hair Restoration Surgery SP 23 OP 24 DO 10.33589/28.1.0023 VO 28 IS 1 A1 Sara Wasserbauer YR 2018 UL http://www.ISHRS-HTForum.org/content/28/1/23.abstract AB