PT - JOURNAL ARTICLE AU - Hartsock, C. L. TI - A Consideration of the Deficiency Factor in Diseases of the Gastro-Intestinal Tract DP - 1936 Apr 01 TA - Cleveland Clinic Journal of Medicine PG - 161--168 VI - 3 IP - 2 4099 - http://www.ccjm.org/content/3/2/161.short 4100 - http://www.ccjm.org/content/3/2/161.full SO - Cleve Clin J Med1936 Apr 01; 3