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Transactions of the Royal Society of Tropical Medicine and Hygiene|January 1, 1993
Hepatitis A sero-epidemiology in Singapore: a changing patternI Yap, R GuanJournal of Gastroenterology and Hepatology|September 1, 1991
Hepatocyte hepatitis B surface antigen expression in chronic hepatitis B virus carriers in Singapore: correlation with viral replication and liver pathologyA Wee, I Yap, R GuanSingapore Medical Journal|October 1, 1991
Chronic hepatitis B infection in SingaporeI Yap, A Wee, R GuanVaccine|January 1, 1992
Recombinant DNA hepatitis B vaccine containing Pre-S components of the HBV coat protein--a preliminary study on immunogenicityI Yap, R Guan, S H ChanJournal of Gastroenterology and Hepatology|January 1, 1995
Study on the comparative immunogenicity of a recombinant DNA hepatitis B vaccine containing pre-S components of the HBV coat protein with non pre-S containing vaccinesI Yap, R Guan, S H ChanJournal of Gastroenterology and Hepatology|July 1, 1991
Hepatitis B vaccination: half dose recombinant DNA hepatitis B vaccine (B-Hepavac II) is as immunogenic as the full recommended dose in healthy adultsR Guan, I Yap, H H TaySingapore Medical Journal|December 1, 1990
Endoscopic retrograde cholangiopancreatography and endoscopic sphincterotomy--a Singapore experienceI Yap, R Guan, J Y KangGut|August 1, 1986
Acid perfusion of duodenal ulcer craters and ulcer pain: a controlled double blind studyJ Y Kang, I Yap, R Guan, et al.Annals of the Academy of Medicine, Singapore|March 1, 1991
Cytological diagnosis from fine needle aspiration biopsy of the liverA Wee, B Nilsson, C Chan-Wilde, et al.Singapore Medical Journal|February 1, 1996
Primary biliary cirrhosis--an uncommon disease in SingaporeI Yap, A Wee, H H Tay, et al.Pageof 15