U.S. health care and the first four months of Obama. Alexander J. Healthc Financ Manage. 2009 Jan;63(1):34-6. PMID: 19161025
[Data on public health in Finland]. WEISS A. Dtsch Med Wochenschr. 1956 Apr 27;81(17):679-81. doi: 10.1055/s-0028-1115763. PMID: 13317689
[Science of health care delivery]. Muzzi A, Panà A. Ig Sanita Pubbl. 2014 Mar-Apr;70(2):131-9. PMID: 25008220