Answer is "Epsilon alcoholic".
E. Morton Jellinek, was a multi talented personality who was born in New York City in 1890. He was a psychologist, biostatistician and as obvious from the question an alcoholism researcher. He described the five stages of alcoholism and Epsilon alcoholism is the fifth f those stages where drinking is halted for even months.
Jellinek dies in 1963 at the desk of his study.
