Methotrexate-induced lung injury in patients with rheumatoid arthritis occurs with peripheral blood lymphocyte count decrease. Issue 8 (12th July 2006) - Inokuma, S; Kono, H; Kohno, Y; Hiramatsu, K; Ito, K; Shiratori, K; Yamazaki, J; Nakayama, H; Shoda, H; Tanaka, Y