References
- Daichman I., Pomerance W. Am. J. Obst. & Gynecol. 1953; 66: 88
- Dieckmann W. J., McCready R. B. Am. J. Obst. & Gynecol. 1947; 54: 496
- Drew Smythe H. J. J. Obst. & Gyn. Brit. Emp. 1937; 44: 480
- Eastman J. N. Am. J. Obst. & Gynecol. 1936; 32: 791
- Gibson G. B. J. Obst. & Gyn. Brit. Emp. 1952; 59: 814
- Greenhill J. P. Year Book of Obst. & Gynecol. 1952; 186, Chicago 1952
- Greenhill J. P. Year Book of Obst. & Gynecol. 1951; 269, Chicago 1951
- Greenhill J. P. Year Book of Obst. & Gynecol. 1953; 163, Chicago 1953 1954
- Guttmacher A. F., Douglas R. G. Am. J. Obst. & Gynecol. 1931; 21: 485
- Hanley B. J. West. J. Surg. 1951; 59: 262
- Macfarlane. New Zealand M. J. 1953; 52: 173, Quoted from Year Book 1954–1955, 149
- Miles L. M. Am. J. Obst. & Gynecol. 1951; 62: 649
- Pattison D. S. Am. J. Obst. & Gynecol. 1955; 69: 233
- Reycraft J. L. Am. J. Obst. & Gynecol. 1953; 65: 857
- Schjött-Rivers E. Meeting Norwegian Ass. Gynecol.. 1949, Not published
- Slemons J. M. Am. J. Obst. & Gynecol. 1932; 23: 294
- Stamer S. Acta Obst. & Gynecol. Scand. 1950; 29: 101
- Straghan McKenzie C. R. Am. J. Obst. & Gynecol. 1954; 68: 981
- Titus R. S. New England J. Med. 1938; 218: 720
- Willson J. R. Am. J. Obst. & Gynecol. 1953; 65: 848