Vanhove, A.-C., T. Bekkering, and F. Cools. “Avoidance of Bottles During the Establishment of Breastfeeds in Preterm Infants”. 2022. Belgian Journal of Paediatrics, vol. 24, no. 1, Jan. 2023, p. 65, http://belgjpaediatrics.com/index.php/bjp/article/view/97.