3Bulletti C, DE Ziegler D, Setti PL, et al. The patterns of uterine contractility in normal menstruating women: from pJaysiology to pa- thology. Ann N Y Acad Sci,2004,1034(1) :64-83.
4van C, estd 1, Jland MM, Hoogland ILl, et al. Endometrial wave. like activity in the non-pregnant uterus. Hum Reprvd Update, 2003,9(2) :131-138.