Oxley-Oxland, JV, R Freercks, D Baker, and E van der Merwe. 2022. “The Characteristics and Costs of Severe Theophylline Toxicity in a Tertiary Critical Care Unit in Eastern Cape Province, South Africa”. South African Medical Journal 112 (11): 866-70. https://doi.org/10.7196/SAMJ.2022.v112i11.16453.