[1] Yamaguchi Univ, Grad Sch Med, Dept Clin Lab Sci, Minami Kogushi, Japan
[2] Stellenbosch Univ, Div Chem Pathol, Fac Hlth Sci, Stellenbosch, South Africa
[3] Natl Hlth Lab Serv, Cape Town, South Africa
[4] Stellenbosch Univ, Tygerberg Acad Hosp, Div Clin Haematol, Dept Med, Cape Town, South Africa
[5] Stellenbosch Univ, Div Haematopathol, Fac Hlth Sci, Stellenbosch, South Africa
[6] Natl Hlth Lab Serv, Cape Town, South Africa