References
- Graham D Y, Klein P D, Evans D J. Lancet 1987; 1: 1174–1177
- Bell G D, Weil J, Harrison G. Lancet 1987; 1: 1367–1368
- Marshall B J, Surveyor J. J Nucl Med 1988; 29: 11–16
- Rauws E AJ, Royenv EA, Langenberg W. Gastroenterology 1988; 79: A370, (Abstract.)