1. MOX, Dipartimento di Matematica, Politecnico di Milano, Piazza Leonardo da Vinci, 32, 20133 Milan, Italy
2. Children’s Heart Institute, Hermann Children’s Hospital, University of Texas Health, McGovern Medical School, Houston, TX, USA
3. Institute of Mathematics, École Polytechnique Fédérale de Lausanne, Station 8, Av. Piccard, CH-1015 Lausanne, Switzerland (Professor Emeritus)