Radboud University Nijmegen Medical Centre, Department of Ethics, Philosophy and History of Medicine, Nijmegen, The Netherlands Martien A M Pijnenburg, Radboud University Nijmegen Medical Centre, Dep.

Mr M Doucet, Department of Philosophy, John Watson Hall, Queen’s University, Kingston, Ontario, Canada K7L 3N6; 1wmd1{at}queensu.ca More than 40 primary studies, and three recent systematic reviews ...