K. Edstrom

SAFETY OF POSTABORTION STERILISATION COMPARED WITH INTERVAL STERILISATION A Controlled Study

S. Ratnam, S. Chew, M. Belsey, 1979, The Lancet.

Psychosocial sequelae of abortion and sterilization: a controlled study of 200 women randomly allocated to either a concurrent or interval abortion and sterilization.

A. Pinol, S. Ratnam, M. Cheng, 2010, Asia-Oceania journal of obstetrics and gynaecology.

The safety of local anesthesia and outpatient treatment: a controlled study of induced abortion by vacuum aspiration.

S. Ratnam, K. Edström, S. Ratnam, 1977, Studies in family planning.