2Hamilton, D K. (2006), Four levels of evidence-based practice. The AIA Journal of Architecture, January. Retrieved from http://www. aia.org/nwsltr_aiaj.cfm? pagename=aiaj_a_20041201_fourlevels
3Evidence-based hospital design improves healthcare outcomes for patients, families and staff, Robert Wood Johnson Foundation Newsletter (JUN, 7, 2004).Retrieved from http:// www. rwjf. org/newsroom/newsreleasesdetail.jsp7 id=10298