Figure 1 — Risk factors for 2019 novel coronavirus disease (COVID-19) patients progressing to critical illness: a systematic review and meta-analysis

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Review|Volume 12, Issue 12|pp. 12410–12421

Risk factors for 2019 novel coronavirus disease (COVID-19) patients progressing to critical illness: a systematic review and meta-analysis

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Figure 1.A schematic flow diagram of studies’ search and retrieval process.

Figure 1 — Risk factors for 2019 novel coronavirus disease (COVID-19) patients progressing to critical illness: a systematic review and meta-analysis | Aging