Ngwezi, D. P., K. Vanderdonck, S. E. Levin, and A. Cilliers. “An Audit of Surgical Repair of Tetralogy of Fallot in an African Tertiary Care Centre”. SA Heart Journal, vol. 10, no. 3, Mar. 2017, pp. 520-5, doi:10.24170/10-3-1792.