“…Campbell and Robertson (1950), Turner (1950), Restall and Smirk (1950), Hill (1951), Campbell, Graham and Maxwell (1952) were among the first to use this drug therapeutically. Its value has been endorsed, particularly in the review of its action, by Morrison (1953), Harrington and Rosenheim (1954), Smirk (1954), and one of us with Maxwell (1954).…”