Update with level 1 studies of the European Hernia Society guidelines on the treatment of inguinal hernia in adult patients

M Miserez, E Peeters, T Aufenacker, J L Bouillot, G Campanelli, J Conze, R Fortelny, T Heikkinen, Lars Nannestad Jørgensen, J Kukleta, S Morales-Conde, P Nordin, V Schumpelick, S Smedberg, M Smietanski, G Weber, M P Simons