Provider: Impact Journals, LLC TY - JOUR AU - Xu, Lizhen AU - Mao, Yaqian AU - Chen, Gang TI - Risk factors for 2019 novel coronavirus disease (COVID-19) patients progressing to critical illness: a systematic review and meta-analysis JO - Aging JA - Aging (Albany NY) VL - 12 IS - 12 PB - Impact Journals, LLC SN - 1945-4589 UR - https://doi.org/10.18632/aging.103383 DO - 10.18632/aging.103383 SP - 12410 EP - 12421 PY - ER -