1 Department of Nursing, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang, People's Republic of China. Electronic address: 65245913@qq.com.
2 Department of Nursing, School and Hospital of Stomatology, China Medical University, Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang, People's Republic of China.