Paris (Le Supplément, 1992), Roma (CNR,
1992), Paris (UNESCO, 1992), Perugia (Università, 1993), Tunis
(Faculté de Droit et des Sciences Politiques, 1996), Strasbourg
(Council of Europe, 1996), Freiburg i. B. (German Academy for Ethics
in Medicine, 1997), Marseille (Association européenne des centres
d'éthique médicale, 1999), Hannover (Zentrum fur Gesundheitsethik
et Evangelische Akademie of Loccum, 1999), Singapore (Asia Europe Foundation,
2004), Pontignano, Siena (British Council, 2004), Roma (Università
Roma 3 and European Science Foundation, 2004).