Okagua, K.E. et al. 2022. Demographic correlates of gestational age at booking among antenatal clinic attendees in secondary healthcare facilities in semi-urban/rural areas of Rivers state, Southern Nigeria. The Nigerian Health Journal. 22, 3 (Oct. 2022), 305–310. DOI:https://doi.org/10.60787/tnhj.v22i3.607.