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Lucy M Bull, Bartlomiej Arendarczyk, Sara Reis, An Nguyen, Joachim Werr, Thomas Lovegrove-Bacon, Mark Stone, Christopher Sherlaw-Johnson

Stefano Spina, Lorenzo Gianquintieri, Francesco Marrazzo, Maurizio Migliari, Giuseppe Maria Sechi, Maurizio Migliori, Andrea Pagliosa, Rodolfo Bonora, Thomas Langer, Enrico Gianluca Caiani, Roberto Fumagalli, , AREU 118 EMS Network Collaborators, Matteo Caresani, Rainiero RizziniSee the full list of authors

Max E R Marsden, Suzie Kellett, Rahul Bagga, Jared M Wohlgemut, Richard L Lyon, Zane B Perkins, Katie Gillies, Nigel RM Tai

Steve Goodacre, Laura Sutton, Ben Thomas, Olivia Hawksworth, Khurram Iftikhar, Susan Croft, Gordon Fuller, Simon Waterhouse, Daniel Hind, Mike Bradburn, Michael Anthony Smyth, Gavin D Perkins, Mark Millins, Andy Rosser, Jon M DicksonSee the full list of authors

Liza Keating, Sarah Wilson, Jack Dainty, Dominic Jones, Jonathan Hill

Michael Dan Arvig, Annmarie Touborg Lassen, Peter Haulund Gæde, Stefan Wernblad Gärtner, Casper Falster, Inge Raadal Skov, Henrik Ømark Petersen, Stefan Posth, Christian B Laursen

BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine

Leanne Greene, Rachel Lane, Maria Crotty, Craig Whitehead, Elizabeth Potter, Petra Bierer, Kate Laver

Jennifer MacLellan, Joanne Turnbull, Jane Prichard, Catherine Pope

Laura Cottey, Thomas Alexander Gerrard Shanahan, Toto Gronlund, Caroline Whiting, Moses Sokunbi, Simon David Carley, Jason E Smith, , On behalf of the James Lind Alliance (JLA) Emergency Medicine (EM) Priority Setting Partnership (PSP) Refresh Steering Group, Louise Dunford, Douglas Findlay, Melanie Gager, Neil Henderson, Dan Horner, Liza KeatingSee the full list of authors