Lack of benefit of methotrexate in severe, steroid-dependent asthma. A double-blind, placebo-controlled study.
Erzurum SC, Leff JA, Cochran JE, Ackerson LM, Szefler SJ, Martin RJ, Cott GR. Lack of benefit of methotrexate in severe, steroid-dependent asthma. A double-blind, placebo-controlled study. Ann Intern Med. 1991 Mar 01; 114(5):353-60.