| Authors’ contributions | TT | KN | AS | AK | KH | YM | MT | MK | KN | TT |
| Research concept and design | y | y | n | n | n | n | n | n | y | n |
| Collection and/or assembly of data | n | y | y | n | n | y | y | y | y | n |
| Data analysis and interpretation | y | y | y | y | y | y | n | y | y | n |
| Writing the article | n | y | n | n | n | n | n | n | n | y |
| Critical revision of the article | y | y | n | n | n | n | n | n | n | y |
| Final approval of article | y | y | y | y | y | y | y | y | y | y |