title: Erratum to: Novel nitrifiers and comammox in a full-scale hybrid biofilm and activated sludge reactor revealed by metagenomic approach.
authors: School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China.|Environmental Biotechnology Laboratory, Department of Civil Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China.|Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou, 510275, China.
authors: Yuanqing
authors: Y
authors: Chao
authors: Environmental Biotechnology Laboratory, Department of Civil Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China.|College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China.
authors: Yanping
authors: Y
authors: Mao
authors: Environmental Biotechnology Laboratory, Department of Civil Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China.
authors: Ke
authors: K
authors: Yu
authors: Environmental Biotechnology Laboratory, Department of Civil Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China. zhangt@hku.hk.
authors: Tong
authors: T
authors: Zhang