1. Centre for Hyperbaric Oxygen Therapy, Military Hospital, B-1120 Brussels;
2. Divers Alert Network Europe-Benelux Research Committee, B-1600 Brussels, Belgium
3. Cardiology Department, Vrije Universiteit Brussel Hospital, B-1040 Brussels;
4. Cardiology Department, Université Libre de Bruxelles Hospital, and
5. Department of Human General Biology, Institut Supérieur d’Education Physique et de Kinésithérapie, Université Libre de Bruxelles, B-1070 Brussels; and