. 2022 Feb 10;10(2):335. doi: 10.3390/healthcare10020335
© 2022 by the authors.
Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Figure 1.
The number of PHIs in China from 2014 to 2020.