Online first papers have undergone full scientific review and copyediting. but have not been typeset or proofread. Mandatory typesetting and proofreading will commence with regular print and online publication, and volume, issue page numbers will then be assigned to the published article. Online first articles should be cited with the DOI link and online publication date.
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