1 Department of Emergency, Nanfang Hospital, Southern Medical University, Guangzhou, China.
2 Department of Stomatology, The People's Hospital of Longhua, Shenzhen, China.
3 Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China.
4 Department of Cadre's Ward, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China.
5 Department of Gastroenterology, Guangdong Provincial Key Laboratory of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China.
6 Department of Emergency and Critical Care Medicine, Guangdong General Hospital & Guangdong Academy of Medical Sciences, Guangzhou, China.
7 Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, China.