Ugwuene et al., “Trimester-Specific Patterns of Maternal Serum Alpha-Fetoprotein Among Pregnant Women Attending a Tertiary Hospital in Southeast Nigeria: Serum Alpha-Fetoprotein Among Pregnant Women”, JBRB, vol. 24, no. 1, pp. 486–489, May 2026, doi: 10.4314/br.v24i1.22.