Introduction to THOR supplement

Welcome to the Trauma, Hemostasis, Oxygenation, and Research (THOR) Networkʼs fourth supplement in TRANSFUSION. As in the previous years, the manuscripts presented in this supplement highlight the presentations from our annual meeting in Bergen, Norway. The first THOR conference was in 2011, and looking back at that conference agenda and at the first THOR supplement, the changes are apparent. In the early years, the agenda was heavily weighted...