1. Hirschsprung, H., Jahrb. f. Kinderh., Berlin, 1888, XXVIII, 61.
2. Osler, W., Arch. Pediat., N.Y., 1903, XX, 355.
3. Beardsley, H. K., Cases and Observations by the Medical Society of Newhaven, Newhaven, 1788, I, (vide Ruhrah, Am. J. Dis. Child., Chicago, 1930, XL, 146).
4. Foote, J. A., Am. J. Dis. Child., Chicago, 1918, XV, 351.
5. An essay on the Diseases most fatal to Infants;Armstrong, G.,1771