In the article by Dr. George A. Johnstone and Dr. John E. Ostendorph entitled "Cholecystitis with Perforation," which appeared in the July issue (Arch. Surg.53:1, 1946), the following footnote was omitted:
The unabridged version of this article was accepted to meet the thesis requirements for the degree of M.Sc. (Med.) for graduate work in surgery at the Graduate School of Medicine, University of Pennsylvania [by Dr. Ostendorph].