Funding for this research was provided by:
Shanghai Key Laboratory of Pediatric Gastroenterology and Nutrition (17DZ2272000)
Received: 11 March 2020
Accepted: 24 June 2020
First Online: 30 June 2020
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University. As a de-identified secondary data analysis, patients’ consent was waived by the Ethical Committee.
: All authors have read and approved the submission of the manuscript. The manuscript has not been published and is not being considered for publication elsewhere, in whole or in part, in any language.
: No potential conflicts of interest relevant to this article were reported.