7Hoffmann R, Happle R. Current understanding, of androgenetic alopeci- a. Part I : etiopathogenesis [ J ]. Eur J Dermato1,2000,10 (4) : 319.
8Sawaya ME, Price VH. Dieffemt levels of 5 alPha -reductase type 1 and 11, aromatase, and androgen receptor in hair follicles of women and men with androgenetic alopecia[ J ]. J Invest Demratol, 1997,109 ( 3 ) : 296 -300.