| Id |
Subject |
Object |
Predicate |
Lexical cue |
| T50 |
0-4 |
Sentence |
denotes |
3.2. |
| T51 |
5-44 |
Sentence |
denotes |
Characteristics of the Included Studies |
| T52 |
45-208 |
Sentence |
denotes |
From the seven studies included in this review for the case of MetHb and COVID-19, two were cross-sectional studies [19,21] and five case reports [17,18,20,22,23]. |
| T53 |
209-308 |
Sentence |
denotes |
The case descriptions reported findings of one single patient [17,20,22,23] or three patients [18]. |
| T54 |
309-427 |
Sentence |
denotes |
Five studies were published in journals [17,18,20,21,22] and two on the preprint server medRxiv (medrxiv.org) [19,23]. |
| T55 |
428-560 |
Sentence |
denotes |
For the case of the three studies concerning COHb and COVID-19, two were cross sectional studies [24,25] and one a case report [20]. |
| T56 |
561-688 |
Sentence |
denotes |
Two of the studies were published in journals [20,25] and one on the preprint server Research Square (researchsquare.com) [24]. |
