References
- Benner, S. (1933) Acta Radiol, 14, p. 207.
- Benner, S. (1937) Ibid, 18, p. 297.
- Foessell, G. (1912) Hygiea, 74, p. 445.
- Foessell, G. (1914) Ibid, 76, p. 1170, 1232, 1294.
- Heyman, J. (1918) Arch. f. Gynak, 108, p. H 2, 3.
- Heyman, J. (1930) Acta Obst. et Gynec. Scand, 9, p. 259.
- Heyman, J. (1935) Acta Radiol, 16, p. 129.
- Ingelman-Sundberg, A. (1947) Acta Radiol
- Sievert, R. (1932) Acta Radiol