1. Department of Occupational Therapy, College of Health, Kyungwoon University, Republic of Korea
2. Department of Occupational Therapy, College of Health Science, Honam University, Republic of Korea
3. Korea Safety Culture Civil Solidarity, Republic of Korea
4. Department of Occupational Therapy, College of Biomedical Sciences and Engineering, Inje University: 607 Obang-dong, Gimhae, Gyeongnam 621-749, Republic of Korea