Correction to: Head Face Med (2019) 15:23

https://doi.org/10.1186/s13005-019-0207-7

Following publication of the original article [1], the author informed that Table 5 was incorrectly captured which is actually an older version of Table 4. The corrected Table 5 is provided below.

Table 5 Details of the selected articles (n = 341) regarding the type of article and methodological parameters