Acknowledgements
We thank Dr Chng Chai Kiat for his assistance in securing funding for
this study, Dr Pui Ling Chay and Dr Rahul Nair for their help in oral
examination and Dr Nisha Subash Chandran Suyien for providing useful
comments to revise the manuscript draft. The continuous and skilful help
of the home visitors and the clinical team from the National University
Hospital and the K.K Women’s and Children’s Hospital, as well as the
database and biostatistics teams, is deeply appreciated.