Erratum

The original article [1] mistakenly omitted mention of a grant support source in the Funding sub-section, and would like to acknowledge that the work was also supported by National Key Basic Research Program of China (2013CB530900).

The original article [1] also mistakenly omits an affiliation for the co-author, Heiman Chow. The correct complete affiliation information for Heiman Chow can thus be viewed below, and in the author details for this erratum:

2Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong.

4Institute for Advanced Study, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong.