Participants
Of 414 included infants, 34 were excluded according to the inclusion and exclusion criteria, and the remaining 380 were enrolled in the RCT (198 females [52.1%] and 182 males [47.9%]): 190 in the MEC group and 190 in the MEE group. Additionally, 13 voluntarily withdrew or were lost to follow-up. A total of 183 infants (96.3%) in the MEC group and 184 infants (96.8%) in the MEE group completed follow-up at age 12 months and were included in the analysis. The follow-up rate for all infants was 96.6% (