Lieberman B A, Belsey E, Gordon A G, Wright C S, Letchworth A T, Noble A D, Niven P A
Br J Obstet Gynaecol. 1978 May;85(5):376-80. doi: 10.1111/j.1471-0528.1978.tb14898.x.
Details of the menstrual cycles in 504 women were recorded before laparoscopic sterilization with a spring-loaded clip and at six months and one year after the procedure. The operation did not affect the length of the menstrual cycle or duration of menstrual flow, nor the patient's assessment of the amount of blood losss or the incidence of dysmenorrhoea. The previous method of contraception was significantly related to subsequent menstrual patterns.
对504名女性在使用弹簧夹进行腹腔镜绝育术前、术后6个月和1年时的月经周期细节进行了记录。该手术未影响月经周期长度、月经持续时间，也未影响患者对失血量的评估或痛经发生率。既往避孕方法与后续月经模式显著相关。
