Whilst reviewing my records, I noticed that you haven't taken the required action to finalize your submission to World Journal of Pediatrics. The status of this manuscript is still recorded as ' Sent Back to Author', which means that your manuscript was returned to you because you have not taken all the necessary steps to comply with the requisites of the submission process of the journal. Reasons for this could be missing submission items, the manuscript did not comply with the journals 'Instructions for Authors' or a missing completed authorship change form*.