“…Received: Feb. 20, 1970 Accepted: Mar. 9, 1970 Abrahams and Lowy, 1970) and high levels of endogenous insulin following the ingestion of a glucose load (Cerletty and Engbring, 1967;Horton, Johnson and Liebovitz, 1968;Spitz et al, 1970;Briggs, Buchanan, Luke and McKiddie, 1967). Furthermore, these patients show a diminished hypoglycemic response to intravenous tolbutamide (Hampers et al, 1966;Cerletty and Engbring, 1967;Spitz et al, 1970) and raised levels of circulating growth hormone (Horton, Johnson and Liebovitz, 1968;Wright, Lowy, Fraser, Spitz, Rubenstein and Bersohn, 1968).…”