PID associated with fertility regulating agents. Task Force on Intrauterine Devices, Special Programme of Research, Development and Research Training in Human Reproduction, World H... by Witoonpanich, P, Koetsawang, A, Koetsawang, S, Rachawat, D, Gupta, I, Ibeziako, P, Brown, SE, Iddenden, D, Apelo, R, de la Cruz, J, Bhatnagar, S, Molina, R, Hagenfeldt, K, Sas, M, Gray, R, Beral, V, Busca, M, Annus, J