1 Subjects: “...Masks / statistics & numerical data...”

2 Subjects: “...Masks / statistics & numerical data...”

3 “...-effectiveness, and evidence-based guidelines regarding the use of masks for unvaccinated HCWs to prevent...”

4 Subjects: “...Masks...”

5 Subjects: “...Masks / standards...”

6 “... more effective in preventing viral and bacterial infections in HCWs compared with surgical masks...”

7 “... more effective in preventing viral and bacterial infections in HCWs compared with surgical masks...”

8 “... protection [wearing masks, gloves, and gown], hand hygiene) used for the interruption of or reduction...”

9 “... protection [wearing masks, gloves, and gown], hand hygiene) used for the interruption of or reduction...”

10 “... marks), petechiae (small red or purple spots), telangiectasia (small, dilated blood vessels...”

11 “... marks), petechiae (small red or purple spots), telangiectasia (small, dilated blood vessels...”

12 “... and the layer of opaque porcelain needed for masking the underlying metal grayish shade. Recently the cost...”

13 “... and the layer of opaque porcelain needed for masking the underlying metal grayish shade. Recently the cost...”

14 “... from potentially masking underlying vitamin B12 deficiency, and possible central nervous system...”

15 “... from potentially masking underlying vitamin B12 deficiency, and possible central nervous system...”

16 “..., emotion and self-image, as well as marked impulsivity causing significant impairment.1 The term BPD...”

17 “..., emotion and self-image, as well as marked impulsivity causing significant impairment.1 The term BPD...”

18 “...) or 4 (very severe) on the Bonini scale, OR 2.2. grade 4 (marked) or 5 (severe) on the modified Oxford...”

19 “...) or 4 (very severe) on the Bonini scale, OR 2.2. grade 4 (marked) or 5 (severe) on the modified Oxford...”

20