Preface. - Khaled Benkrid; Didier Keymeulen; David Merodio; Michael Newell; Rainer Wansch; Umeshkumar D. Patel; Ahmet T. Erdogan; Niels Hadaschik; Luca Sterpone; Jelle Poupaert; Massimo Violante (AHS, 2013)