RT Journal Article SR Electronic T1 Why Comparing Techniques in Hair Restoration Surgery Is an Intrinsically Difficult Task JF International Society of Hair Restoration Surgery FD Publication of the International Society of Hair Restoration Surgery SP 157 OP 163 DO 10.33589/17.5.0157 VO 17 IS 5 A1 Shapiro, Ron L. YR 2007 UL http://www.ISHRS-HTForum.org/content/17/5/157.abstract AB