Botha, Matthys Hendrik; Van der Merwe, Frederick H.; Snyman, Leon Cornelius; Dreyer, Gerrit J.; Visser, Cathy; Dreyer, Greta(Lippincott, Williams & Wilkins, 2023-07)
Dreyer, Greta; Van der Merwe, F.H.; Botha, M.H.; Snyman, Leon Cornelius; Constant, D.; Visser, Carina; Harvey, J.(Health and Medical Publishing Group, 2015-11)
Van Aardt, M.C. (Matthys Cornelis); Dreyer, Greta; Snyman, Leon Cornelius; Richter, Karin Louise; Becker, P.; Mojaki, S.M.(Health and Medical Publishing Group, 2016-06)
Dreyer, Greta; Snyman, Leon Cornelius; Van der Merwe, F.H.; Richter, Karin Louise; Dreyer, G.J.; Visser, Cathy; Botha, M.H.(South African Medical Association, 2022-07)