EVALUATION OF TWO VAGINAL, UTERUS SPARING OPERATIONS FOR PELVIC ORGAN PROLAPSE: MODIFIED MANCHESTER OPERATION (MM) AND SACROSPINOUS HYSTEROPEXY (SSH), A STUDY PROTOCOL FOR A MULTICENTRE RANDOMIZED NON-INFERIORITY TRIAL (THE SAM STUDY) Article Schulten S.F., Enklaar R.A., Kluivers K.B., Van Leijsen S.A., Jansen-van der Weide M.C., Adang E.M., Van Bavel Jeroen, Van Dongen Heleen, Gerritse M.B., Van Gestel Iris, Malmberg G.G., Mouw R.J., Van Rumpt-van de Geest D.A., Spaans W.A., Van der Steen Annemarie, Stekelenburg Jelle, Tiersma E.S., Verkleij-Hagoort A.C., Vollebregt Astrid, Weemhoff Mirjam, Van Eijndhoven H.W., Wingen C.B. BMC Women's Health. BioMed Central. Vol. 19. 2019. P. 1-8