1. ACGME Department of Applications and Data Analysis. ACGME Data Resource Book Academic Year 2007-2008. Chicago: ACGME; 2008. p. 78 and ACGME Department of Applications and Data Analysis. ACGME Data Resource Book Academic Year 2008-2009. Chicago: ACGME; 2009. p. 80 and ACGME Department of Applications and Data Analysis. ACGME Data Resource Book Academic Year 2009-2010. Chicago: ACGME; 2010. p. 65 and ACGME Department of Applications and Data Analysis. ACGME Data Resource Book Academic Year 2010-2011. Chicago: ACGME; 2011. p. 66 and ACGME Department of Applications and Data Analysis. ACGME Data Resource Book Academic Year 2011-2012. Chicago: ACGME; 2012. p. 66 and ACGME Department of Applications and Data Analysis. ACGME Data Resource Book Academic Year 2012-2013. Chicago: ACGME; 2013. p. 74.
2. ACGME Department of Applications and Data Analysis. ACGME Data Resource Book Academic Year 2008-2009. Chicago: ACGME; 2009. p. 77 and ACGME Department of Applications and Data Analysis. ACGME Data Resource Book Academic Year 2012-2013. Chicago: ACGME; 2013. p. 75.
3. AAMC Center for Workforce Studies. 2008 Physician Specialty Data Book. Washington, DC: AAMC; 2008. p. 13 and AAMC Center for Workforce Studies. 2012 Physician Specialty Data Book. Washington, DC: AAMC; 2012. p. 14.
4. Total leadership: be a better leader, have a richer life;Friedman,2008
5. Leading from within: poetry that sustains the courage to lead;Intrator,2007