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King.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Guarantor"}},{"value":"The authors of this manuscript declare no relationships with any companies whose products or services may be related to the subject matter of the article.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}},{"value":"One of the co-authors is a biostatistic expert and had provided support in the statistical analysis of this study.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Statistics and biometry"}},{"value":"Written informed consent was waived by\u00a0the local Institutional Review Board.","order":5,"name":"Ethics","group":{"name":"EthicsHeading","label":"Informed consent"}},{"value":"Local Institutional Review Board approval was obtained.","order":6,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}},{"value":"A total of 412 patients were included in this study, of which 151 with nasopharyngeal carcinoma and 102 with benign hyperplasia have been included in two previous studies published on American Journal of Neuroradiology entitled \u201cMR imaging criteria for the detection of nasopharyngeal carcinoma: discrimination of early-stage primary tumors from benign hyperplasia\u201d (10.3174\/ajnr.A5493) and \u201cEarly detection of cancer: evaluation of mr imaging grading systems in patients with suspected nasopharyngeal carcinoma\u201d (10.3174\/ajnr.A6444).","order":7,"name":"Ethics","group":{"name":"EthicsHeading","label":"Study subjects or cohorts overlap"}},{"value":"\u2022 Retrospective\u2022 Case-control study\u2022 Performed at one institution","order":8,"name":"Ethics","group":{"name":"EthicsHeading","label":"Methodology"}}]}}