Provider: Impact Journals, LLC TY - JOUR AU - Liao, Yunfei AU - Feng, Yong AU - Wang, Bo AU - Wang, Hanyu AU - Huang, Jinsha AU - Wu, Yaxin AU - Wu, Ziling AU - Chen, Xiao AU - Yang, Chao AU - Fu, Xinqiao AU - Sun, Hui TI - Clinical characteristics and prognostic factors of COVID-19 patients progression to severe: a retrospective, observational study JO - Aging JA - Aging (Albany NY) VL - 12 IS - 19 PB - Impact Journals, LLC SN - 1945-4589 UR - https://doi.org/10.18632/aging.103931 DO - 10.18632/aging.103931 SP - 18853 EP - 18865 PY - ER -