Proc. R. Soc. A 474, 20170773. (Published online 23 May 2018) (doi:10.1098/rspa.2017.0773)
The authors of this manuscript have identified an error in the Funding section of their article.
‘This work is supported by the National Natural Science Foundation of China through grant no. 11675136, by the Hong Kong Research Grant Council through grant no. 17326616, by the Croucher Foundation, by the Canadian Institute for Advanced Research (CIFAR) and by the HKU Seed Funding for Basic Research’.
should read as:
‘This work is supported by the National Natural Science Foundation of China through grant no. 11675136, by the Hong Kong Research Grant Council through grant no. 17300317, by the Croucher Foundation, by the Canadian Institute for Advanced Research (CIFAR) and by the HKU Seed Funding for Basic Research’.