Study | Exclusion reasons | Remarks | Reference(s) | ||
---|---|---|---|---|---|
Ahn, 2020 | - |
Ahn J. Korean Med. Sci. 2020; 35:e149 10.3346/jkms.2020.35.e149 |
|||
Shen, 2020 | - |
Shen C JAMA 2020 Mar 27;323(16):1582-1589. 10.1001/jama.2020.4783 |
|||
Zhang, 2020 | - | no control group | |||
Zhang, 2020 | - | no control group |
Zhang L Aging (Albany NY) 2020 Apr 22;12(8):6536-6542. 10.18632/aging.103102 |
||
Ye, 2020 | - | no control group |