1. Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
2. Academy of Medical Sciences of Zhengzhou University, Zhengzhou, Henan, China
3. Lymphoma Diagnosis and Treatment Centre of Henan Province, Zhengzhou, Henan, China
4. Nursing Department, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China