Chen J, Wen J, Zheng Y, Yang H, Luo K, Liu Q, Hu R, Tan Z, Huang Q, Fu J. Prognostic significance of SLC9A9 in patients with resectable esophageal squamous cell carcinoma. Tumour Biol. 2015 Sep;36(9):6797–803. doi: 10.1007/s13277-015-3392-4. PMID: 25835977.