Adeyekun AA, Ifijeh OA, Akhigbe AO, Abubakar MM. Ultrasound reference values for Inferior Vena Cava diameter and Collapsibility Index among adult Nigerians. WAJR [Internet]. 2019 Jun. 2 [cited 2025 Jun. 15];26(1):25-30. Available from: https://wajr.org/index.php/home/article/view/27