1. Meyer, J., Necheles, H., Use of Prostigmine in Cardiospasm J. Lab. and Clin. Med. 27: 162, Nov. 1941.
2. Best, C. H., Taylor, N. B., The Physiological Bases of Medical Practice. 1937, Baltimore, William Wood and Company, P. 674.
3. Sandweiss, D. J. and others, Effect of Urine Extracts in Peptic Ulcers; Experimental and Clinical study. Am. J. Digest. Dis. 8: 371 Oct. 1941.
4. Winkelstein, A., Diseases of the Gastro-Intestinal Tract 1942, New York, Oxford University Press, P. 16.
5. Cushing, H., Peptic Ulcers and Interbrain. Surg., Gynec, and Obst, 55: 1, July 1932.