Ethics approval and consent to participate
This retrospective analysis was approved by the ethical review board of Hebei Medical University Fourth Affiliated Hospital, and the requirement for informed consent was waived. Ethics Committee of Hebei Medical University Fourth Affiliated Hospital, reference number: 2022KS017, data 20222.6.27. Ethics approval was obtained from the Ethics Committee of Hebei Medical University Fourth Affiliated Hospital, and waivers of consent were given to the study subjects.