1. The duties of ethical committees applied to human reproduction

   • Vered H. Eisenberg
   • Joseph G. Schenker

   News And Views Pages: 689 - 697

2. The significance of elevated progesterone at the time of administration of human chorionic gonadotropin may be related to luteal support

   • K. F. Miller
   • E. J. Behnke
   • S. G. Awadalla

   Clinical Assisted Reproduction Pages: 698 - 701

3. Maternal serum creatine kinase does not predict tubal pregnancy

   • Stephen R. Lincoln
   • James R. Dockery
   • Bryan D. Cowan

   Clinical Assisted Reproduction Pages: 702 - 704

4. The predictive value of an initial serum β human chorionic gonadotropin level for pregnancy outcome following in vitro fertilization

   • Suna M. Qasim
   • Carrie Callan
   • Jung K. Choe

   Clinical Assisted Reproduction Pages: 705 - 708

5. Effect of a programmed short-term stimulation protocol on the replacement of cryopreserved embryos

   • Bruno Imthurn
   • Ervin Macas
   • Paul J. Keller

   Clinical Assisted Reproduction Pages: 709 - 712

6. Pregnancy achieved with pronuclear-stage embryos that were cryopreserved and thawed twice: A case report

   • My Baker
   • Jerome H. Check
   • Inda M. Hoover

   Clinical Assisted Reproduction Pages: 713 - 715

7. Simultaneous program of natural-cycle in vitro fertilization and cryopreserved-thawed embryo transfer

   • Seok Hyun Kim
   • Chung Hoon Kim
   • Yoon Seok Chang

   Clinical Assisted Reproduction Pages: 716 - 721

8. Improved human zygote development in a modified Ham's F10 medium in vitro

   • Maha M. Mahadevan
   • Michael M. Miller
   • Dean M. Moutos

   Clinical Assisted Reproduction Pages: 722 - 725

9. Could in vitro fertilization with a modified sperm preparation technique be an option to micromanipulations?

   • Christiane Wittemer
   • Jeanine Ohl
   • Pierre Dellenbach

   Andrology Pages: 726 - 730

10. Twin pregnancy following IVF treatment using frozen-thawed retrograde ejaculated sperm

    • J. I. Tay
    • A. Whitehead
    • A. J. Rutherford

    Andrology Pages: 731 - 732

11. Quality control in IVF with mouse bioassays: A four years' experience

    • M. van den Bergh
    • I. Baszó
    • Y. Englert

    Animal Experimentation Pages: 733 - 738

12. A partial hydatidiform mole with 2N/3N mosaicism identified by molecular analysis

    • Yuichiro Ikeda
    • Yoshihiro Jinno
    • Tadayuki Ishimaru

    Genetics Pages: 739 - 744

13. Short-term gonadotropin suppression with oral contraceptives benefits poor responders prior to controlled ovarian hyperstimulation

    • Steven R. Lindheim
    • David H. Barad
    • Mark V. Sauer

    Short Communication Pages: 745 - 747

14. Response to slotnich and ortega [monoamniotic twinning and zone manipulation: A survey of U.S. IVF centers correlating zona manipulation procedures and high-risk twinning frequency (J Assist Reprod Genet 1996;13:381–385)]

    • David R. Meldrum
    • Minda Hamilton

    Letter To The Editor Pages: 748 - 748

15. Announcement

    Announcement Pages: 749 - 749