Observations on the Movements of the Duodenal Contents,with Special Reference to Antiperistalsis and Pyloric Regurgitation

Barclay , “The Alimentary Tract,” 1915, 96, et seq.

CASE, Amer. Journ. Roent., June, 1916, iii, 314;

Radiology, July, 1927, ix, 1.

Marbaix , “La Cellule,” 1898, xiv, 251–273.