Prescriptions for a toxic combination: use of methotrexate plus trimethoprim-sulfamethoxazole in the United States.
Davis SA, Krowchuk DP, Feldman SR. Prescriptions for a toxic combination: use of methotrexate plus trimethoprim-sulfamethoxazole in the United States. South Med J. 2014 May; 107(5):292-3.