SURGICAL SITES
- http://www.facs.org/
- http://icsglobal.org/
- http://cancernet.nci.nih.gov/
- http://www.cancer.gov/
- http://www.nlm.nih.gov/
- http://www.surgonc.org/
- http://www.vh.org/
- http://www.nsabp.pitt.edu/
- http://www.nccn.org/
- http://www.acg.gi.org/
- http://www.gastro.org/
- http://www.sages.org/
- http://www.discolrect.com/
- http://link.springer.de/link/service/journals/00464/
SEARCH ENGINES
- http://www.medwebplus.com/subject/Specialties/Surgery
- http://www.ncbi.nlm.nih.gov/PubMed
- http://www.medcare.be/
- http://www.hospitals.be/