by Natrajan, P K, Muldoon, T G, Greenblatt, R B, Mahesh, V B
Published in American journal of obstetrics and gynecology (15.06.1981)

by Greenblatt, R.B., Natrajan, P.K., Aksu, M.F., Tzingounis, V.A.
Published in Maturitas (1980)