Roberto Ruggiero is working at the University of Campania Luigi Vanvitelli, Italy. His clinical activity was carried out from December 1985 as a Medical Assistant, first at the Experimental Surgery service of the University of Naples and subsequently from March 1987 to August 1999 at the VII Division of General Surgery of the University of Naples, with Assistant duties since 1991. From September 1999 to August 2000, he served in the General Surgery department, directed by Prof. Luigi Amantea. From September 2000 to December 2007, he served at the III Division of General Surgery of the Second University of Naples. From January 2008 to today, he has been serving in the XI General Surgery Division of the University of Campania Luigi Vanvitelli (former Second University), with surgical activity relating to the digestive system, minimally invasive surgery, and endocrine surgery (breast and thyroid).