Factors associated with a positive response to the surprise question in complex chronic patients treated by advanced practice nurses in primary care. - Montoya-Juárez R; Fernández-Rodríguez J; Cabeza-Pérez R; Fernández-Leyva A; Esteban-Burgos AA; Iribarne-Durán LM; López-Morales M (BMC palliative care, 2026)