Institution: | 1. Shenzhen Center for Disease Control and Prevention, Shenzhen 518020, P. R. China;2. Center for Quality Crop Seed of Shenzhen Municipality, Shenzhen 518040, P. R. China;3. China National Hybrid Rice Research and Development Center, Tsinghua Shenzhen Longgang Research Institute, Longgang District, Shenzhen 518000, P. R. China |