@book{7868,
	title = {Obstetrics and gynecology clinics of North America/},
	publisher = {W.B. Saunders Company, },
	year = {2010},
	address = {Philadelphia:},
	note = {Update on medical disorders in pregnancy, Ed. By. Judith U. Hibbard, June 2010; Vol.37; No.02; Perimenopause, Ed. By Nanette Santoro, Sep.2011, Vol.38, No.03}
}