Khosa, J.; van As, A. (Sebastian). Unilateral Congenital Nasal Pyriform Aperture Stenosis and Unilateral Choanal Atresia – a Novel Finding: A Case Report. S Afr Med J 2022, 112 (11b), 931-932. https://doi.org/10.7196/SAMJ.2022.v112i11b.16839.