[1] St Augustine Hosp, Durban Pain Clin, Chelmsford 1, Durban, South Africa
[2] Glynview Multiprofess Practice, Gauteng, South Africa
[3] Nelson R Mandela Sch Med, Inkosi Albert Luthuli Cent Hosp, Head Clin Unit, Dept Anaesthesiol, Durban, South Africa
[4] Nelson R Mandela Sch Med, Inkosi Albert Luthuli Cent Hosp, Durban, South Africa
[5] Optima Psychiat Hosp, Bloemfontein, South Africa
[6] Univ Pretoria, Dept Family Med, Pretoria, South Africa
[7] Wilgers MR & Med Ctr, Pretoria, South Africa
[8] Univ Pretoria, Fac Med, Pretoria, South Africa
[9] Stellenbosch Univ, Dept Psychiat, South African Res Chairs Initiat SARChI, PTSD Program, Stellenbosch, South Africa
[10] Houghton House Grp, Gauteng, South Africa