Presentationsa 2015-Optics-ProfBom 2015-MedicalDeltaProfessorTonvanderSteen 2014-Medical_Delta_Meetup_What_can_you_do_in_one_heartbeat 2010-Tedxrotterdam 2010-Lofdergeneeskunde 2009-LowlandsUniversityTonvanderSteen