Long-term experience with etanercept in the treatment of rheumatoid arthritis in elderly and younger patients: patient-reported outcomes from multiple controlled and open-label extension studies.
Schiff MH, Yu EB, Weinblatt ME, Moreland LW, Genovese MC, White B, Singh A, Chon Y, Woolley JM. Long-term experience with etanercept in the treatment of rheumatoid arthritis in elderly and younger patients: patient-reported outcomes from multiple controlled and open-label extension studies. Drugs Aging. 2006; 23(2):167-78.