Immunohistochemical localization of types 1 and 2 5α-reductase in human scalp. - Bayne,EK.; Flanagan,J.; Einstein,M.; Ayala,J.; Chang,B.; Azzolina,B.; Whiting,DA.; Mumford,RA.; Thiboutot,D.; Singer,II.; Harris,G. (Br J Dermatol, 1999)