Sept 2003. I.B. * 7th ESC Seminar, Budapest. 2. . SHORT HISTORY OF IUDCornerstone international and Hungarian events. 1909Dr. Richard Richter (Germany): dried silkworm gut1923Dr. Karl Pust (Germany): similar device with tail1929Dr. Ernst Gr?fenberg (Germany): Gr?fenberg ring1934Dr. T. A. Ota
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