1. The safety of laminaria and rigid dilators for cervical dilation prior to suction curettage for first trimester abortion: A comparative analysis;Gold,1980
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4. Complications caused by difficult removal of laminaria tents;Gusdon;Am. J. Obstet. Gynecol.,1975
5. Cervical hydrogel dilator: A new delivery system for prostaglandins;Akkapeddi;Adv. Exp. Med. Biol.,1974