| Id |
Subject |
Object |
Predicate |
Lexical cue |
| T140 |
0-34 |
Sentence |
denotes |
The study has several limitations. |
| T141 |
35-266 |
Sentence |
denotes |
First, we analyzed only articles accessible via PubMed, which include the MEDLINE database and papers included in the National Library of Medicine catalogue [21]. PubMed only recently started to include preprints in search results. |
| T142 |
267-382 |
Sentence |
denotes |
Second, we did not weight the importance of the research by journals’ criteria, articles’ citations, or altmetrics. |
| T143 |
383-449 |
Sentence |
denotes |
These features may additionally distinguish most essential papers. |
| T144 |
450-554 |
Sentence |
denotes |
Finally, we analyzed a limited number of factors that may be associated with the article’s productivity. |
