Assessment of metal exposure in fingernails of patients with nasopharyngeal cancer: a case study in Vietnamese men - Hanh Van Nguyen; Sang Thi Minh Nguyen; Huong Thi Thu Tran; Loan Thi Hong Truong; Dong Van Nguyen; Linh Thi Truc Nguyen; Ba Ngoc Vu; Phuong Truc Huynh (BioMetals, 2026)