S. Ratnam
发表
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U. Rajan,
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A. Thai,
S. Chua,
S. Ratnam,
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Lee Yk,
C. Sc,
S. Chew,
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Singapore medical journal.
S. Ng,
S. Ratnam,
B. Marshall,
1992,
BMJ.
L. Kok,
P. Chan,
S. Ratnam,
1994,
Singapore medical journal.
A. Thai,
S. Chua,
S. Ratnam,
1996,
Singapore medical journal.
T. Mccarthy,
S. Ratnam,
Y. Yong,
1985,
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U. Landy,
S. Ratnam,
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K. Edström,
S. Ratnam,
M. Belsey,
1977,
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S. Ratnam,
K. Edström,
S. Ratnam,
1977,
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M. Rauff,
M. Cheng,
S. Ratnam,
1979,
Singapore medical journal.
W. Tsoi,
S. Ratnam,
G. E. Tay,
1987,
Biology and society : the journal of the Eugenics Society.
A. Biswas,
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S. Ratnam,
1995,
Annals of the Academy of Medicine, Singapore.
R. Rochat,
Y. M. Wong,
M. Cheng,
1977,
Studies in family planning.
C. Anandakumar,
S. Ratnam,
Y. Wong,
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The journal of obstetrics and gynaecology research.
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S. Ratnam,
K. Chong,
1970
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O. Viegas,
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S. Ratnam,
1996,
The journal of obstetrics and gynaecology research.
S. Arulkumaran,
P. Steer,
S. Ratnam,
1978
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S. Ratnam,
S. S. Ratnam,
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1972,
The Journal of obstetrics and gynaecology of the British Commonwealth.
S. Arulkumaran,
S. Ratnam,
A. Biswas,
1998
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A. Thai,
S. Chua,
S. C. Yeoh,
1993,
Singapore medical journal.
A. Ilancheran,
S. Ratnam,
Pritam Singh,
1989,
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S. Ratnam,
M. Tsakok,
P. Chew,
1976,
Singapore medical journal.
K. Tham,
S. Chew,
S. Ratnam,
1997,
Singapore medical journal.
S. Ratnam,
S. Lim,
1982,
Singapore medical journal.