1. Department of Recreation, Park and Tourism Management, College of Health and Human Development, Pennsylvania State University, State College, PA, USA
2. Department of Parks, Recreation and Tourism Managemen, College of Behavioral, Social and Health Sciences, Clemson University, Clemson, SC, USA
3. Department of Forest Ecosystems and Society, College of Forestry, Oregon State University, Corvallis, OR, USA
4. Department of Forestry and Environmental Conservation, College of Agriculture, Forestry and Life Sciences, Clemson University, Clemson, SC, USA