1. Department of Landscape Architecture, College of Architecture and Urban Planning, Tongji University, 1239 Siping Road, Shanghai, P.R. China; and Department of Horticulture, Faculty of Agriculture, Suez Canal University, Egypt
2. Department of Landscape Architecture, College of Architecture and Urban Planning, Tongji University, 1239 Siping Road, Shanghai, P.R. China
3. Shanghai Xiaofeng Dental Clinic Group, Shanghai, P.R. China