Online first papers have undergone full scientific review and copyediting, but have not been typeset or proofread. To cite this article, use the DOIs number provided. Mandatory typesetting and proofreading will commence with regular print and online publication of the online first papers of the SMJ. Online First articles should be cited with the online publication date and DOI link.

Example: Saxena A, Agarwal KK, Parshuram V, Das AR. Gantzer muscles and their applied aspects; an exceptional finding. Singapore Med J 2013 April 12. https://doi.org/10.11622/smedj.2013064.

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Type: Original Article
Author(s): Wong YJ, Lum HM, Tan PT, Teo EK, Tan JY, Kumar R, Thurairajah PH
Citation: Singapore Med J 2021; https://doi.org/10.11622/smedj.2021049
Epub Date: 19 Apr 2021
Type: Review Article
Author(s): Yeo KT, Biswas A, Ho SKY, Kong JY, Bharadwaj S, Chinnadurai A, Yip WY, Ab Latiff NF, Quek BH, Yeo CL, Ng YPM, Ee KTT, Chua MC, Poon WB, Amin Z
Citation: Singapore Med J 2021; https://doi.org/10.11622/smedj.2021045
Epub Date: 19 Apr 2021
Type: Original Article
Author(s): Heyzer L, Ramason R, Molina JADC, Chan WWL, Loong CY, Kwek EBK
Citation: Singapore Med J 2021; https://doi.org/10.11622/smedj.2021041
Epub Date: 19 Apr 2021
Type: Original Article
Author(s): Au-Yong PSA, Peh WM, Koh FHX, Teo LM, Ng SP, Tan ALN, Ng ASH, Chew MH
Citation: Singapore Med J 2021; https://doi.org/10.11622/smedj.2021046
Epub Date: 19 Apr 2021
Type: Letter to the Editor
Author(s): Hong LF, Chua TE, Koh LPD, Yong FSH, Chen HY
Citation: Singapore Med J 2021; https://doi.org/10.11622/smedj.2021044
Epub Date: 19 Apr 2021
Type: Review Article
Author(s): Zainudin SB, Yeoh E
Citation: Singapore Med J 2021; https://doi.org/10.11622/smedj.2021047
Epub Date: 19 Apr 2021
Type: Case Series
Author(s): Chong CZ, Tan BY, Sia CH, Khaing T, Yeo LL
Citation: Singapore Med J 2021; https://doi.org/10.11622/smedj.2021043
Epub Date: 19 Apr 2021
Type: Review Article
Author(s): Loo YX, Yan S, Low LL
Citation: Singapore Med J 2021; https://doi.org/10.11622/smedj.2021033
Epub Date: 16 Apr 2021
Type: Original Article
Author(s): Ming L,  Jara-Lazaro AR, Cheok PY, Thike AA
Citation: Singapore Med J 2021; https://doi.org/10.11622/smedj.2021031
Epub Date: 16 Apr 2021