Erratum: Wang, Y. et al., A Privacy Preserving Scheme for Nearest Neighbor Query. Sensors 2018, 18, 2440

The authors wish to make the following erratum to this paper [1]:

One the basis of the current author list, the affiliation of author Zhihong Tian should be with both 1 and 2, in accordance with the following format:

Zhihong Tian ^1,2,*

The authors would like to apologize for any inconvenience caused to the readers by these changes.