Possible preventive effect of salazosulfapyridine against development of Pneumocystis pneumonia in methotrexate-receiving patients with rheumatoid arthritis. Issue 6 (1st November 2016) - Mizushina, Kennosuke; Hirata, Ayako; Hayashi, Norihide; Takenaka, Sayaka; Ito, Hideki; Ogura, Takehisa; Fujisawa, Yuki; Imamura, Munetsugu; Yamashita, Naoko; Kujime, Rie; Nakahashi, Sumie; Kameda, Hideto