8Veldman J, Van Houdenhove B, Verguts J. Chronic fa- tigue syndrome., a hormonal origin? A rare case of dys- menorrhea membranacea[J]. Arch~ Gynecol Obstet, 2009, 279(5) :717-720.
9Razzi S, Luisi S, Ferretti C, etal. Use of a progesto- gen only preparation containing desogestrel in the treat-ment of recurrent pelvic pain after conservative surgery for endometriosis[J]. Eur J Obstet Gynecol Reprod Bi- oi, 2007,135(2):188-190.
10Ahrendt HJ, Karckt U, Pich T,et al. The effects of an oestrogen-free, desogestrel-containing oral contracep- tive in women with cyclical symptoms: results from two studies on oestrogen-related symptoms and dys- menorrhoea[J]. Eur J Contracept Reprod Health Care, 2007,12(4) :354-361.