| | Issue Date | Title | Author(s) |
| 21 | 1991 | Hepatitis B vaccination: Half dose recombinant DNA hepatitis B vaccine (B-Hepavac II) is as immunogenic as the full recommended dose in healthy adults | Guan, R. ; Yap, I. ; Tay, H.H. |
| 22 | 1996 | Hepatitis B virus infection in Singapore | Guan, R. |
| 23 | 1995 | Hepatitis C virus genotypes in Singapore and Indonesia | Ng, W.C. ; Guan, R. ; Tan, M.F. ; Seet, B.L.; Lim, C.A.; Ngiam, C.M.; Sjaifoellah, Noer H.M.; Lesmana, L. |
| 24 | 1991 | Hepatocyte hepatitis B surface antigen expression in chronic hepatitis B virus carriers in Singapore: Correlation with viral replication and liver pathology | Wee, A. ; Yap, I. ; Guan, R. |
| 5 | 1991 | Horizontal or vertical transmission of hepatitis B virus? A serological survey in family members of hepatitis B carriers in Singapore | Tan, C.C. ; Guan, R. ; Yap, I. ; Tay, H.H. ; Kang, J.Y. |
| 6 | 1995 | How does chili cause upper gastrointestinal symptoms?: A correlation study with esophageal mucosal sensitivity and esophageal motility | Yeoh, K.G. ; Ho, K.Y. ; Guan, R. ; Kang, J.Y. |
| 7 | 1995 | Immunogenicity and safety of an inactivated hepatitis A vaccine amongst Singaporeans. | Guan, R. ; Ng, H.S.; Fock, K.M.; Ho, K.Y. ; Yap, I. ; Kang, J.Y. ; Chow, W.C.; Chew, C.N.; Ng, C.; Teo, C.J. |
| 8 | 2000 | Interferon monotherapy in chronic hepatitis B | Guan, R. |
| 9 | 1993 | Low frequency of endoscopic esophagitis in Asian patients | Kang, J.Y. ; Tay, H.H.; Yap, I. ; Guan, R. ; Lim, K.P.; Math, M.V. |
| 10 | 1990 | Low-dose cimetidine in the acute treatment of duodenal ulcer. Comparison of a single nocturnal dose regimen with a twice daily regimen. | Kang, J.Y. ; Guan, R. ; Tay, H.H. ; Yap, I. ; Wee, A. ; Math, M.V. ; Labrooy, S.J. |
| 11 | Dec-2006 | Management of chronic hepatitis B in challenging patient populations | Dore, G.J.; Guan, R. ; Wasim Jafri, S.M.; Sarin, S.V.; Keeffe, E.B. |
| 12 | Feb-1996 | Primary biliary cirrhosis - An uncommon disease in Singapore | Yap, I. ; Wee, A.; Tay, H.H.; Guan, R. ; Kang, J.Y. |
| 13 | 1997 | Racial differences in Helicobacter pylori seroprevalence in Singapore: Correlation with differences in peptic ulcer frequency | Kang, J.Y. ; Yeoh, K.G. ; Ho, K.Y. ; Guan, R. ; Lim, T.P.; Quak, S.H. ; Wee, A. ; Teo, D.; Ong, Y.W. |
| 14 | 1985 | Ranitidine in the acute treatment of duodenal ulcer. A double-blind placebo-controlled trial | Yap, I. ; LaBrooy, S.J.; Tay, H.H. ; Guan, R. ; Kang, J.Y. |
| 15 | 1992 | Recombinant DNA hepatitis B vaccine containing pre-S components of the HBV coat protein - A preliminary study on immunogenicity | Yap, I. ; Guan, R. ; Chan, S.H. |
| 16 | 1992 | Recombinant DNA hepatitis B vaccine containing pre-S components of the HBV coat protein - A preliminary study on immunogenicity | Yap, I.; Guan, R. ; Chan, S.H. |
| 17 | Apr-1996 | Serological profiles of hepatitis B carrier patients in Singapore with special reference to the frequency and significance of concurrent presence of HBsAg and anti-HBs | Wang, Y.M. ; Ng, W.C. ; Kang, J.Y. ; Yap, I. ; Seet, B.L.; Teo, J. ; Smith, R.; Guan, R. |
| 18 | Dec-1991 | Seroprevalence of antibodies to the hepatitis C virus in Singapore. | Yap, I. ; Guan, R. ; Kang, J.Y. ; Tay, H.H. ; Lee, E. ; Choong, L.; Woo, K.T. |
| 19 | Oct-1996 | Seroprevalence of hepatitis B and C viral markers in patients with primary hepatocellular carcinoma in Singapore | Khin, L.W.; Teo, C.J. ; Guan, R. |
| 20 | 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 vaccines | Yap, I. ; Guan, R. ; Chan, S.H. |