by KOK, L. P, YAP, I. L. E, GUAN, R. Y. C
Published in Singapore medical journal (01.08.1989)

by KONG, H. L, YAP, I. L. E, KUEH, Y. K
Published in Singapore medical journal (01.12.1996)

by Wang, T L, Yap, I L, Tan, Y O
Published in Annals of the Academy of Medicine, Singapore (01.03.1991)

by YAP, I. L. E, LABROOY, S. J, GUAN, R, KANG, J. Y
Published in Singapore medical journal (01.08.1987)

by Oh, William, Yap, Lucy L., D'Amodio, Mabel D.
Published in The Journal of pediatrics (01.05.1969)

by Yap, I L, Chua, K L, Ti, T K, Tan, L K, Yuen, R
Published in Annals of the Academy of Medicine, Singapore (01.10.1983)