by GOH, A, CHAY, O. M, FOO, A. L, ONG, E. K
Published in Singapore medical journal (01.08.1997)

by CHAY, O. M, HIEW, J, TAN, C. K, FOO, A. L, LIM, K. W, CHENG, H. K
Published in Southeast Asian journal of tropical medicine and public health (01.06.1992)

by Foo, A.L., Tan, K.K., Chay, O.M.
Published in Tubercle and lung disease (01.02.1993)

by Foo, A L, Lanteri, C J, Burton, P R, Sly, P D
Published in The Journal of asthma (1993)

by Foo, A L, Sly, P D
Published in The Journal of asthma (1991)

by Chay, O M, Foo, A L, Ho, L
Published in The Journal of the Singapore Paediatric Society (1992)

by Chay, O M, Hiew, J, Tan, C K, Foo, A L, Lim, K W, Cheng, H K
Published in The Journal of the Singapore Paediatric Society (1992)

by Chay, O M, Hiew, J, Tan, C K, Foo, A L, Lim, K W, Cheng, H K
Published in The Journal of the Singapore Paediatric Society (1992)

by Foo, A L, Chay, O M, Hiew, J, Tan, C K, Lim, K W, Cheng, H K
Published in The Journal of the Singapore Paediatric Society (1991)