91.   The patients studied were both male and female and their details are shown in table II.

92.   If the patient was already in the hospital, it was the time when haematemesis or melaena occurred.

93.   At entry all patients had been seropositive for hepatitis B surface antigen and HBeAg for at least six months.

94.   Five patients were on a diet devoid of gliadin and they were hence eliminated from the analysis.

95.   All but two patients were on some form of maintenance therapy.

96.   All cryptogenic patients were negative for ANA-H, SMA-AA as well as liver-kidney microsomal antibody.

97.   These patients were not necessarily under the care of the consultant with an interest in gastroenterology.

98.   Of particular interest is the observation that primary sclerosing cholangitis patients are also perinuclear antineutrophil cytoplasmic antibody positive.

99.   Because there is little motor activity in the healthy colon during sleep, sedation was minimised and we waited until the patient was awake before starting the testing.

100.   Both patients were blood group O.