1.
Phelps, JD, MPH S, Russell, BS R, Doering, MS G. Model “code silver” internal lockdown policy in response to active shooters. Am J Disaster Med [Internet]. 2007 May 1 [cited 2024 Apr. 28];2(3):143-50. Available from: https://wmpllc.org/ojs/index.php/ajdm/article/view/1845