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- [2] HEPATITIS-B VACCINE - RESPONDER STATUS AND TIMING OF ADDITIONAL BOOSTER DOSES LANCET, 1987, 2 (8558): : 561 - 561
- [5] PROLONGED IMMUNITY AFTER LATE BOOSTER DOSES OF HEPATITIS-B VACCINE JOURNAL OF INFECTIOUS DISEASES, 1988, 157 (06): : 1267 - 1269