“…None has been satisfactorily proved to be advantageous. Therapeutic trials have included the use of the following: potassium iodide and pilocarpine (Braendstrup, 1950), irradiation (Gradle, 1937;Hessberg, 1944;Guyton and Reese, 1948), anticoagulants (Holmin and Ploman, 1938;Klien and Olwin, 1956;Vannas and Orma, 1957), fibrinolytic *Presented at the American Medical Association Annual Convention, St. Louis, June 17-22, 1978. Correspondence to Donald R. May (Dolenek et al, 1968;Kohner et al, 1976), dextran (Frangois and Verbraeken, 1974), corticosteroids (Van Loon, 1961;Mehlan et al, 1974), and carbogen (95% 02 and 5% CO2) (Sedney, 1976).…”