S. Chammas

A Study of the Association Between Crohn's Disease and Psychiatric Illness

J. Helzer, D. Alpers, C. Norland, 1984 .

A controlled study of the association between ulcerative colitis and psychiatric diagnoses

J. Helzer, D. Alpers, C. Norland, 1982, Digestive Diseases and Sciences.

A study of the association between Crohn's disease and psychiatric illness.

J. Helzer, D. Alpers, C. Norland, 1984, Gastroenterology.

A double‐blind comparison of alprazolam Vs. imipramine and placebo in the treatment of major depressive disorder

J. Feighner, S. Chammas, G. Hendrickson, 1983, Acta psychiatrica Scandinavica.