TY - GEN AU - RL Atmar AU - AR Opekun AU - MA Gilger AU - MK Estes AU - SE Crawford AU - FH Neill LA - eng PY - 2014 TI - Determination of the 50% Human Infectious Dose for Norwalk Virus. Journal of Infectious Diseases UR - https://www.ncbi.nlm.nih.gov/pubmed/24253285 ER -