[1] Bispebjerg Hosp, Copenhagen, Denmark
[2] Skane Univ Hosp, Malmo, Sweden
[3] Univ Copenhagen, Copenhagen, Denmark
[4] Copenhagen Univ Hosp, Copenhagen, Denmark
[5] Cardiff Metropolitan Univ, Cardiff, S Glam, Wales
[6] Royal Coll Surgeons Ireland, Dublin 2, Ireland
[7] Vrije Univ Amsterdam, Med Ctr, Amsterdam, Netherlands
[8] Zurich Univ Appl Sci, Winterthur, Switzerland