1. Express Scripts. 2014 drug trend report. http://lab.express-scripts.com/drug-trend-report (accessed 2015 Aug 18).
2. Patient Access Network Foundation. Home page. www.panfoundation.org/ (accessed 2015 Nov 11).
3. HealthWell Foundation. Ways to give. www.healthwellfoundation.org/ways-to-give?gclid=CjwKEAiA1JuyBRCogJLz4J71kj0SJADsd6QRvh87WVC5fL-A-yf-OxhXkLgNO4zsAX3me0SZ1ou0RRoCEQPw_wcB (accessed 2015 Nov 11).
4. 2015 American College of Rheumatology guideline for the treatment of rheumatoid arthritis;Singh;Arthritis Care Res,2016
5. Guidelines of care for the management of psoriasis and psoriatic arthritis;Menter;J Am Acad Dermatol,2008