Correction: Pre-treatment serum apolipoprotein E: a promising prognostic indicator for nasopharyngeal carcinoma. - He XM; Jiang SC; Luo QW; Ding JW; Hu RH; Hu JL; Liu MM; Tao L; Zhang JZ; Wu JY; Deng S; Zeng L (European journal of medical research, 2025)