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Popp LW, Mettler L, Weisner D, et al. Ectopic pregnancy treatment using pelviscopic or vaginosonographically-guided intrachorionic injection of methotrexate and POR 8. Ultrasound Obstet Gynecol. 1991;1(2):136-43doi: 10.1046/j.1469-0705.1991.01020136.x.
Popp, L. W., Mettler, L., Weisner, D., Mecke, H., Freys, I., & Semm, K. (1991). Ectopic pregnancy treatment using pelviscopic or vaginosonographically-guided intrachorionic injection of methotrexate and POR 8. Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology, 1(2), 136-43. https://doi.org/10.1046/j.1469-0705.1991.01020136.x
Popp, L W, et al. "Ectopic pregnancy treatment using pelviscopic or vaginosonographically-guided intrachorionic injection of methotrexate and POR 8." Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology vol. 1,2 (1991): 136-43. doi: https://doi.org/10.1046/j.1469-0705.1991.01020136.x
Popp LW, Mettler L, Weisner D, Mecke H, Freys I, Semm K. Ectopic pregnancy treatment using pelviscopic or vaginosonographically-guided intrachorionic injection of methotrexate and POR 8. Ultrasound Obstet Gynecol. 1991 Mar 01;1(2):136-43. doi: 10.1046/j.1469-0705.1991.01020136.x. PMID: 12797089.
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