Authors’ contributions
B.T., M.A.F, A.A and M.D. designed the study. A.A. trained the intervention method. A.GH collected data. M.D. and A.Gh. analyzed data and prepared tables and results. A.Gh., B.T., M.A.F, M.D, A.A and G.O wrote the manuscript. BT, M.A.F., A.Gh., A.A. and M.D. contributed to the study design, they provided critical feedback on the study and statistical analysis and inputted to the draft of this manuscript. All authors have read and approved the final manuscript.