1 Department of Cardiothoracic Surgery, Kunming Children's Hospital, Kunming, China.
2 Department of Neonatology, Kunming Childre's Hospital, Kunmimg, China.
3 Department of Comprehensive Surgery, Lincang Maternal and Child Health Hospital, Lincang, China.
4 International Healthcare Management Research and Development Center (IHM-RDC), The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, Shandong, China.
5 Health Management, Atlantica Instituto Universitario, Oeiras, Portugal.