Biosense Webster/Johnson & Johnson Medical BV, St Jude Medical Nederland BV, Guidant Nederland BV, Boston Scientific Nederland, Merck, Sharp & Dome, Bard Electrophysiology, Philips Medical Systems, AstraZeneca BV, Schering Plough, Siemens, Servier, Astellas Pharmas, Toshiba Medical Systems Nederland BV, Medtronic BV and Vitatron.UBL - phd migration 201