REFERENCES
- Bell, T. F.: A maternal mortality study in seven cities of Pacific Coast 1933–1934. Tr. Pacific Coast Obst. & Gynec. Soc., 1935.
- Smith, G. Van and Smith, Olive.: Increased excretion of pregnanediol in pregnancy from diethylstilbestrol with special reference to the prevention of late pregnancy accidents. Am. J. Obst. & Gynec. 51: 411–445 (March) 1946.