8Williams JR, Nokes DJ, Anderson RM. Targeted hepatitis B vaccination-a cost effective immunization strategy for the UK ? Epidemic Community Health, 1996, 50(6): 667.
9Ghendon Y. WHO strategy for the global elimination of new cases of hepatitis B Vaccine, 1990, 8 (Supplement): 129-134.
10Kane M. Global program for control of hepatitis B infection Vaccine, 1995, 13 (Supplement): 47.