Unfortunately, the original version of this article [1] contained an error. A sentence in the statistical analysis section was written incorrectly. It was written wrongly as:

“If there was significant heterogeneity, we choose a fixed model; if there was no heterogeneity, we choose a random model.”

The correct form of this sentence is:

“If there was significant heterogeneity, we choose a random model; if there was no heterogeneity, we choose a fixed model.”