RT Journal Article SR Electronic T1 Darkening of grey hair during thyroid hormone therapy JF International Society of Hair Restoration Surgery FD Publication of the International Society of Hair Restoration Surgery SP 67 OP 67 DO 10.33589/18.2.0067 VO 18 IS 2 A1 Redondo, Pedro A1 Guzman, Maria A1 Marquina, Miren A1 Pretel, Maider A1 Aguado, Leyre A1 Lloret, Pedro A1 Gorrochategui, Alberto YR 2008 UL http://www.ISHRS-HTForum.org/content/18/2/67.abstract AB