Authors: Thomas Engstrøm; Henning Kelbæk; Steffen Helqvist; Dan Eik Høfsten; Lene Kløvgaard; Lene Holmvang; Erik Jørgensen; Frants Pedersen; Kari Saunamäki; Peter Clemmensen; Ole De Backer; Jan Ravkilde; Hans-Henrik Tilsted; Anton Boel Villadsen; Jens Aarøe; Svend Eggert Jensen; Bent Raungaard; Lars Køber Journal: Lancet Date: 2015-08-15 Impact factor: 79.321