1. From Klinikum der Universität München-Großhadern (E.H., S.J.), München, Germany; Eastbourne District Hospital (N.S.), Eastbourne, United Kingdom; Sahlgrenska Universitetssjukhuset (N.E.), Göteborg, Sweden; Medisch Centrum Alkmaar (J.R.), Alkmaar, the Netherlands; Universitätsklinikum Bonn (T.L.), Bonn, Germany; Ospedale Civile Piacenza (A.C.), Piacenza, Italy; Universitätsklinikum Hamburg-Eppendorf (A.S.), Hamburg, Germany; and St. Georges Hospital and Medical School (J.C.), London, United...