Erwanto EL. Effect of Spontaneous Delivery and Elective Caesarean Section on Number of Bifidobacterium Colony in Newborns. Indones J Obstet Gynecol [Internet]. 2016 Dec. 16 [cited 2026 Feb. 21];35(2). Available from: https://www.inajog.com/index.php/journal/article/view/222