| Description | Notes by Penrose on the following studies:
Harrison, L.P. "A Case of Perforated Duodenal Ulcer in an Infant", in Archives of Disease in Childhood, 6, 1931, p. 245.
Tallerman, K H. "Achalasia of the Oesophagus", Proceedings of the Royal Society of Medicine - Section for Study of Disease in Children, volume 28, 1935.
Finkelstein, H. "Pylorospasmus (Einfacher Pylorospasmus und hypertrophische Pylorusstenose)" in Lehrbuch der Suglingskrankheiten (Berlin: Springer, 1924). |