Development of trauma systems in Europe—reports from England, Germany, the Netherlands, and Spain oleh Tim JS Chesser, FRCS, Chris Moran, FRCS, Keith Willett, FRCS, Bertil Bouillon, MD, Johannes Sturm, MD, Sascha Flohé, MD, Steffen Ruchholtz, MD, Suzan Dijkink, MD, Inger B. Schipper, MD, PhD, FACS, Juan Carlos Rubio-Suarez, MD, Francisco Chana, MD, Julio de Caso, MD, Enrique Guerado, MD