A morphometric study of maternal smoking on apoptosis in the syncytiotrophoblast - Marana, Heitor Ricardo Cosinski; Andrade, Jurandyr Moreira de; Martins, G A; Silva, João Santana da; Sala, Maria Matheus de; Cunha, Sérgio Pereira da (International Journal of Gynecology and Obstetrics, 1998)