Alemayehu Hunduma Higi, Gurmesa Tura Debelew, and Lelisa Sena Dadi. “Maternal Healthcare Services Utilization Trajectories in Four Regions of Ethiopia: A Latent Class Analysis”. The Ethiopian Journal of Health Development, vol. 35, no. 4, Nov. 2021, https://www.ejhd.org/index.php/ejhd/article/view/5305.