Saumya RamaRao, Marlina Lacuesta, Marilou Costello, Blesilda Pangolibay, Heidi Jones, The Link between Quality of Care and Contraceptive Use, International Family Planning Perspectives, Vol. 29, No. 2 (Jun., 2003), pp. 76-83
RamaRao et al. (Sun,) studied this question.