@articleSivakumaran_Harrison_Marschner_Martin_1998, title=Ocular toxicity from ethambutol: a review of four cases and recommended precautions., volume=111, number=1077, journal=N Z Med J, author=Sivakumaran, P and Harrison, AC and Marschner, J and Martin, P, year=1998, pages=428–430 

@articleSivakumaran_Harrison_Marschner_Martin_1998, title=Ocular toxicity from ethambutol: a review of four cases and recommended precautions., volume=111, number=1077, journal=N Z Med J, author=Sivakumaran, P and Harrison, AC and Marschner, J and Martin, P, year=1998, pages=428–430