REFERENCES
- National Network of Libraries of Medicine. (2006). About the National Network of Libraries of Medicine (NN/LM) http://nnlm.gov/about (Accessed: 13 October 2009 ).
- Internal Revenue Service. Instructions for Schedule H (Form 990) http://www.irs.gov/pub/irs-pdf/i990sh.pdf (Accessed: 13 October 2009 ).
- Internal Revenue Service. Hospitals and Community Benefit—Interim Report http://www.irs.gov/charities/charitable/article/0,,id=172267,00.html (Accessed: 13 October 2009 ).