Name Info Provider Link
Free full text from BORIS free resource Bern Open Repository and Information System https://boris.unibe.ch/id/eprint/32270
Radiation Therapy free resource MedlinePlus Health Information https://medlineplus.gov/radiationtherapy.html
subscription/membership/fee required Ovid Technologies, Inc. http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=19504109.ui
subscription/membership/fee required Springer https://dx.doi.org/10.1007/s00330-009-1451-1