Fig. 2

Flow diagram for screening and evidence selection. *The repeated article was excluded due to the biomarker having a different end up, and it may disturb the results of the study. *The articles that had little statistical power were not conclusive, and the statistical evaluation did not confirm the use of the biomarker. *The articles that had many limitations were excluded because the impossibility to find the optimal selection method, and factor omission which can affect the outcome. *The articles related to treating the subject with little force were also excluded due to lack of information between the treatment and the use of the biomarkers.