www.herniaweb.org
www.belsurg.org
www.europeanherniasociety.it
www.fitikdernegi.org
www.british-hernia-society.org
www.iehs.de
www.americanherniasociety.org
www.facs.org
www.sichirurgia.org
www.operationhernia.org.uk
www.elcd.org
www.springerlink.com/home/main.mpx
www.ncbi.nlm.nih.gov/sites/entrez
