The PioneersThe MilitaryReferences
  1. http://www.faqs.org/health/bios/12/Theodor-Kocher.html
  2. http://www.surgical-tutor.org.uk/defaulthome.htm?surgeons/ramstedt.htm~right
  3. http://www.whonamedit.com/doctor.cfm/1103.html
  4. http://www.whonamedit.com/synd.cfm/1146.html
  5. http://en.wikipedia.org/wiki/Bernhard_von_Langenbeck
  6. http://en.wikipedia.org/wiki/Theodor_Billroth
  7. http://en.academic.ru/dic.nsf/enwiki/8187504
  8. http://www.1911encyclopedia.org/Sir_James_Young_Simpson
  9. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2604469/
  10. http://thinkexist.com/quotation/ten_minutes_of_genuine_belly_laughter_had_an/174929.html