Defining the concept of mental dysregulation in patients requiring ambulance and/or emergency department care: protocol for a Delphi consensus study oleh Lisette Schoonhoven, Julia Crilly, Eric Chan, Niek Galenkamp, Rachel Muir, Geurt Van de Glind, Floortje E Scheepers, Mark van Veen, Wietske H W Ham, Bart Schut, Lente Werner, Emily Hilton, David Baden