Kalla Ismail S
Department of Pulmonology and Department of Critical Care Medicine, Charlotte Maxeke Johannesburg Academic Hospital, University of the Witwatersrand, Johannesburg, South Africa.
Afr J Thorac Crit Care Med. 2019 Jul 31;25(2). doi: 10.7196/AJTCCM.2019.v25i2.021. eCollection 2019.