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- [2] HEPATITIS-B - ABSENCE OF TRANSMISSION BY GASTROINTESTINAL ENDOSCOPY BRITISH MEDICAL JOURNAL, 1978, 1 (6104): : 23 - 24
- [3] IS THE HEPATITIS-B VIRUS TRANSMITTED BY FIBEROPTIC UPPER GASTROINTESTINAL ENDOSCOPY (UGE) SOUTH AFRICAN MEDICAL JOURNAL, 1986, 70 (01): : 56 - 57