1. Abbott Laboratories. Humira (adalimumab) [highlights of prescribing information]. Last revised September 2012. http://www.accessdata.fda.gov/drugsatfda_docs/label/2012/125057s232lbl.pdf (accessed 17 Apr 2013).
2. UCB Inc. Cimzia (certolizumab) [highlights of prescribing information]. Last revised November 2012. http://www.accessdata.fda.gov/drugsatfda_docs/label/2012/125160s189lbl.pdf (accessed 17 Apr 2013).
3. Amgen Wyeth, manufactured by Immunex. Enbrel (etanercept) [highlights of prescribing information]. Last revised December 2012. http://www.accessdata.fda.gov/drugsatfda_docs/label/2012/103795s5507lbl.pdf (accessed 17 Apr 2013).
4. Janssen Biotech, Inc. Remicade (infliximab) [highlights of prescribing information]. Last revised March 2013. http://www.accessdata.fda.gov/drugsatfda_docs/label/2013/103772s5345lbl.pdf (accessed 17 Apr 2013).
5. Janssen Biotech, Inc. Simponi (golimumab) [highlights of prescribing information]. Last revised November 2012. http://www.accessdata.fda.gov/drugsatfda_docs/label/2012/125289s070lbl.pdf (accessed 17 Apr 2013).