APA

Smulders Y. M., Spoelstra-de Man A. M., Slaats E. H., Weigel H. M., Stehouwer C. D. & Jos Frissen P. H. (2001). Trimethoprim-sulphamethoxazole as primary Pneumocystis carinii prophylaxis does not increase serum homocysteine levels in HIV-positive subjects. : European journal of internal medicine.

Chicago

Smulders Y M, Spoelstra-de Man A M.E, Slaats E H, Weigel H M, Stehouwer C D.A and Jos Frissen P H. 2001. Trimethoprim-sulphamethoxazole as primary Pneumocystis carinii prophylaxis does not increase serum homocysteine levels in HIV-positive subjects. : European journal of internal medicine.

Harvard

Smulders Y. M., Spoelstra-de Man A. M., Slaats E. H., Weigel H. M., Stehouwer C. D. and Jos Frissen P. H. (2001). Trimethoprim-sulphamethoxazole as primary Pneumocystis carinii prophylaxis does not increase serum homocysteine levels in HIV-positive subjects. : European journal of internal medicine.

MLA

Smulders Y M, Spoelstra-de Man A M.E, Slaats E H, Weigel H M, Stehouwer C D.A and Jos Frissen P H. Trimethoprim-sulphamethoxazole as primary Pneumocystis carinii prophylaxis does not increase serum homocysteine levels in HIV-positive subjects. : European journal of internal medicine. 2001.