Choo Esther K, Byington Carrie L, Johnson Niva-Lubin, Jagsi Reshma
Center for Policy and Research in Emergency Medicine, Oregon Health and Science University, Portland, OR 97239, USA.
Texas A&M University Health Science Center, Bryan, TX, USA.
Lancet. 2019 Feb 9;393(10171):499-502. doi: 10.1016/S0140-6736(19)30251-X.