机构:
Univ Witwatersrand, Fac Hlth Sci, Sch Clin Med, Dept Anaesthesia, Johannesburg, South Africa
Charlotte Maxeke Johannesburg Acad Hosp, Johannesburg, South AfricaUniv Witwatersrand, Fac Hlth Sci, Sch Clin Med, Dept Anaesthesia, Johannesburg, South Africa