Roy G. Farquharson
A. A. Templeton
E. Jauniaux
International Symposium on First Trimester Fetal Diagnosis (1985 Lausanne, Switzerland)
Jean-Michel Foidart
World Congress on Fertility and Sterility (12th 1986 Singapore)
E. R. Barnea
Brenda Krause Eheart
Margie Profet
Toshio Hata
B. Brambati
S. Shan Ratnam
Carolyn Jarvis
Klaus Kraemer
G. Pescia
Sergio Fabro
J. G. Grudzinskas