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Midwifery|June 1, 1997
Elderly nulliparae in midwifery care in AmsterdamY Smit, S A Scherjon, P E Treffers
Early Human Development|January 1, 1985
A critical analysis of 75 therapeutic abortionsN J Leschot, M Verjaal, P E Treffers
European Journal of Obstetrics, Gynecology, and Reproductive Biology|October 1, 1993
The Wormerveer study; perinatal mortality and non-optimal management in a practice of independent midwivesM Eskes, D van Alten, P E Treffers
British Medical Journal|February 4, 1978
Influence of induced abortion on gestational duration in subsequent pregnanciesJ W van der Slikke, P E Treffers
British Journal of Obstetrics and Gynaecology|August 1, 1985
Risks of midtrimester amniocentesis; assessment in 3000 pregnanciesN J Leschot, M Verjaal, P E Treffers
Prenatal Diagnosis|July 1, 1981
Risk of amniocentesis and laboratory findings in a series of 1500 prenatal diagnosesM Verjaal, N J Leschot, P E Treffers
British Journal of Obstetrics and Gynaecology|June 1, 1989
Midwifery in The Netherlands. The Wormerveer study; selection, mode of delivery, perinatal mortality and infant morbidityD van Alten, M Eskes, P E Treffers
American Journal of Obstetrics and Gynecology|May 1, 1987
The reliability of perinatal mortality statistics in The NetherlandsJ P Doornbos, H J Nordbeck, P E Treffers
Occupational and Environmental Medicine|May 1, 1995
Physical work load and gestational age at deliveryA P Koemeester, J P Broersen, P E Treffers
Obstetrics and Gynecology|September 1, 1983
Threatened preterm labor: the influence of time factors on the incidence of respiratory distress syndromeM F Schutte, P E Treffers, J G Koppe
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