Preliminary analysis of the behavior of stage I ovarian serous tumors of low malignant potential: a Gynecologic Oncology Group study. - Barnhill,D.; Kurman,R.J.; Brandy,M.F.; Omura,G.A.; Yordon,E.; Given,FT.; Kucera,P.R.; Roman,L.D. (J Clin Oncol, 1995)