2174-5145 2174-5145 S2174-51452018000100092 10.14306/renhyd.22.1.572 Denmark Norway United Kingdom Denmark USA Netherlands Denmark Norway Denmark United Kingdom 00 03 2018 00 03 2018 22 1 92 100 1 2005 366 107-8 2 2005 365 469 3 2011 154 50-5 4 1998 280 280-2 5 2002 287 2799-801 6 2005 2 260-4 7 2005 2 218-29 8 2010 376 20-1 9 2011 93 2079-86 10 2014 348 g5219 11 2016 69 174-8 12 2007 100 187-90 13 2009 339 b2680 14 2015 78 e35-6 15 2015 20 677 16 2014 7 687-92 17 2013 66 296-301 18 2011 104 1085-97 19 2009 20 National Institute for Health Research 2016 21 2007 37-58 22 2016 387 123-4 23 2016 109 264-8 24 2014 384 2176-7 25 1999 224-34 26 2010 7 27 2003 290 516-23 28 2016 387 122-3 29 2014 383 101-4 30 2014 383 166-75 31 2014 383 267-76 32 2014 383 257-66 33 2014 383 176-85 34 2009 374 86-9 35 2009 25 Suppl 1 Suppl 1 182-95 36 2014 11 37 2016 14 59 38 2014 9 39 2013 107 575-84 40 2016 354 i3507 41 2008 61 64-75 42 2012 1 2