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Ragni, G., Lombroso Finzi, G.C., Olivares, M.D. et al. Twin in vitro fertilization (IVF) pregnancies: Spontaneous intrauterine abortion after selective second-trimester termination of ectopic intraabdominal pregnancy. J Assist Reprod Genet 8, 236–237 (1991). https://doi.org/10.1007/BF01130813
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DOI: https://doi.org/10.1007/BF01130813