1. Adbou NI, Zweiman B, Casella SR (1973) Effects of azathioprine therapy on bone marrow dependent and thymus dependent cells in man. Clin Exp Immunol 13: 55
2. Amin AR, Attur M, Thakken GD, Patei PD, Vyas PR, Patel RN, Patel IR, Abramson SB (1996) A novel mechanism of action of tetracyclines: effects on nitric oxide synthases. Proc Natl Acad Sci USA 93:14014
3. Amos RS, Pullar T, Bax DE, Situnayake D, Capell HA, McConkey B (1986) Sulphasalazine for rheumatoid arthritis: toxicity in 774 patients for one to 11 years. Br Med J 293: 420
4. Aono H, Hasunuma T, Fujisawa K, Vakajima T, Yamamoto K, Mita S, Nishioka K (1996) Direct suppression of human synovial cell proliferation in vitro by salazosulfapyridine and bucillamine. J Rheumatol 23: 65
5. Bankhurst AD (1999) Etanercept and methotrexate combination therapy. Clin Exp Rheumatol 17: s69