BibTex format
@article{ISARIC:2021:10.1007/s15010-021-01599-5,
author = {ISARIC, Clinical Characterisation Group},
doi = {10.1007/s15010-021-01599-5},
journal = {Infection: journal of infectious disease},
pages = {899--905},
title = {COVID-19 symptoms at hospital admission vary with age and sex: results from the ISARIC prospective multinational observational study},
url = {http://dx.doi.org/10.1007/s15010-021-01599-5},
volume = {49},
year = {2021}
}