Adeyekun, A. A.; Ifijeh, O. A.; Akhigbe, A. O.; Abubakar, M. M. Ultrasound Reference Values for Inferior Vena Cava Diameter and Collapsibility Index Among Adult Nigerians. WAJR 2019, 26 (1), 25-30. https://doi.org/10.4103/wajr.wajr_51_17.