Cervical dilatation with pessaries containing a new prostaglandin E1 analogue in patients undergoing induced abortion

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        • Nakano R.
        • Hata H.
        • Sasaki K.
        • Yamoto M.
        The use of prostaglandin E1 analogue pessaries in patients having first trimester abortions.
        Br. J. Obstet. Gynaecol. 1980; 87: 287