Author Contributions
ZEG, AG, LAD, USK, KM and EG contributed to the design and
conceptualization of the study. ZEG, AG, LAD, USK contributed to
indesigning the search strategy and literatüre search. Data extraction
was conducted by ZEG an AG. Data entry and statistical analysis were
performed EG. Critical appraisal was done by ZEG, USK and KM. ZEG and KM
contributed to drafting and writing the manuscript. All authors reviewed
and contributed in editing the manuscript.