Advisory board Paul Sugarbaker, US François Gilly, France Dominique Elias, France Santiago Gonzalez Moreno, Spain Marcello Deraco, Italy Syed A. Ahmad, US Edward Levine, US Frans Zoetmulder, Netherlands Yutaka Yonemura, Japan P.I. Piso, Germany Joachim Jähne, Germany Wim Peter Ceelen, Belgium