@article{Morens2009,
author = {Morens, D.M. and Taubenberger, J.K. and Fauci, A.S.},
title= {The persistent legacy of the 1918 influenza virus},
year = {2009},
doi = {10.1056/NEJMp0904819},
volume = {361},
pages = {225--229},
}