0034-7531 0034-7531 S0034-75312021000100001 Cuba 00 03 2021 00 03 2021 93 1 1 2016 388 10063 10063 3027-35 2 2012 379 9832 9832 2162-72 3 2016 81 4 4 World Health Organization.Unicef 2014 5 2017 140 6 6 6 the Victorian Infant Collaborative Study Group 2018 3 20 7 2019 143 2