In the published article, the ‘Acknowledgements’ section reads:
Acknowledgements
This study was supported by National Natural Science Foundation of China (81370131) and the National Institute of Health (HL-66994).
It should read:
Acknowledgements
This work was supported by grants from the National Natural Science Foundation of China (No. 81370131), the Shanghai Committee of Science and Technology (No. 134119b1200), the Outstanding Academic Leader of Health System in Shanghai (No. XBR2013078) and the National Institute of Health (HL-66994).