Methods
A parallel-group, randomized control trial with equal allocation was conducted from August 2018 to June 2019 (before the onset of COVID-2019 pandemic) at a level 3B NICU of rural tertiary care, a university-affiliated teaching institute in India. The Institute Ethics Committee-2 of HM Patel Centre for Medical Care and Education, Karamsad approved this study via document dated 05/06/2018 and identified by IEC/HMPCMCE/95/Faculty/10/11/18. Informed consent was obtained from parents/legal guardians. The research involving human research participants was carried out in accordance with the Declaration of Helsinki.