Association between intrauterine device type and risk of perforation and device expulsion: results from the Association of Perforation and Expulsion of Intrauterine Device study

Jennifer Gatz, Mary Anne Armstrong, Debbie Postlethwaite, Tina Raine‐Bennett, Giulia Chillemi, Amy Alabaster, Maqdooda Merchant, Susan D. Reed, Laura Ichikawa, Darios Getahun, Michael J. Fassett, Jiaxiao Shi, Fagen Xie, Vicki Y. Chiu, Theresa M. Im, Harpreet S. Takhar, Jinyi Wang, Catherine W. Saltus, Mary E. Ritchey, Alex Asiimwe, Federica Pisa, Juliane Schoendorf, Yesmean Wahdan, Xiaolei Zhou, Shannon Hunter, Mary S. Anthony, Jeffrey F. Peipert