Prevalence of severe malnutrition in cancer patients: a systematic review and meta-analysis. - Hosseini, Sayed Mohsen; Salari, Nader; Darvishi, Niloofar; Siahkamari, Zahra; Rahmani, Adibeh; Shohaimi, Shamarina; Faghihi, Seyed Hassan; Mohammadi, Masoud (Journal of Health, Population & Nutrition, 2025)