Yan, Ruohua
Li, Kun
Lv, Yaqi
Peng, Yaguang
Van Halm-Lutterodt, Nicholas
Song, Wenqi
Peng, Xiaoxia
Ni, Xin
Article History
Received: 19 August 2021
Accepted: 4 April 2022
First Online: 10 April 2022
Declarations
:
: The PRINCE study was approved by the Ethics Committee of Beijing Children’s Hospital and all participating centers. Informed consent was signed by each child’s legally authorized representative (parent or guardian) and the child himself/herself if he/she was 8 years or older. The methods of this study were carried out in accordance with the Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.