RT Journal Article SR Electronic T1 Ridging at a Graft Hairline JF International Society of Hair Restoration Surgery FD Publication of the International Society of Hair Restoration Surgery SP 9 OP 9 DO 10.33589/3.4.0009 VO 3 IS 4 A1 Kabaker, Sheldon YR 1993 UL http://www.ISHRS-HTForum.org/content/3/4/9.abstract AB