1. Gastroenterology
Topics include Gastrointestinal Medications in Pregnancy, Constipation in Pregnancy, Diarrhea in Pregnancy, Acute Fatty Liver of Pregnancy, Inflammatory Bowel Disease in Pregnancy and Dyspepsia in Pregnancy.
http://www.fpnotebook.com/GI.htm

2. MedlinePlus Medical Encyclopedia: Atypical mycobacterial infection
There are many different species of mycobacterium other than tuberculosis ( Mycobacterium tuberculosis. (bone infection) They can also infect the lungs, lymph nodes, gastrointestinal tract, skin, and soft tissues.
http://www.nlm.nih.gov/medlineplus/ency/article/000640.htm

3. RIFABUTIN a Commonly Used Medication
Rash, gastrointestinal symptoms, leukopenia, muscle and joint aches and discolored urine; uncommonly: Tuberculosis organisms which are resistant to rifampin will be resistant to rifabutin, and vice versa.
http://www.hivdent.org/drugs/RIFABUTIN.htm