Lymph Node Metastasis Ratio: Prognostic Significance in Papillary Thyroid Cancer. - Ferreira, Ana Rita; Ramalho, Diogo; Martins, Daniela; Amado, Andreia; Graça, Susana; Soares, Carlos; Pereira, Bela; Oliveira, Maria João; Oliveira, Manuel; Póvoa, Antónia (Indian Journal of Surgery, 2025)