Is 2-dimensional transvaginal ultrasonography necessary 6 weeks after insertion of the levonorgestrel 52-mg intrauterine device?AJOG MFM at a Glance by Patty A.H.H. van der Heijden, MD, Peggy M.A.J. Geomini, MD, PhD, Iris Ketel, MD, PhD, Sebastiaan Veersema, MD, PhD, Marlies Y. Bongers, MD, PhD

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