1. Mobility Impairment Research Center; Babol University Of Medical Sciences; Babol Iran
2. Clinical Research Development Unite of Rouhani Hospital; Babol University of Medical Sciences; Babol Iran
3. Division Rheumatology; Department of Medicine; Rouhani Hospital; Babol Iran
4. Student Research Committee; Master of Biostatistics and Epidemiology; Babol University of Medical Science; Babol Iran
5. Health Research Center; Master of Biostatistics and Epidemiology; Babol University of Medical Science; Babol Iran