Wim Hissink Muller

Methotrexate versus azathioprine in the treatment of rheumatoid arthritis. A forty-eight-week randomized, double-blind trial.

J. Rasker, L. van de Putte, W. Muller, 1991, Arthritis and rheumatism.

Reduced thiopurine methyltransferase activity and development of side effects of azathioprine treatment in patients with rheumatoid arthritis.

R. D. De Abreu, L. van de Putte, W. Muller, 1998, Arthritis and rheumatism.