Bernabeu-Wittel, M. Murcia-Zaragoza, J. Hernández-Quiles, C. Escolano-Fernández, B. Jarava-Rol, G. Oliver, M. Díez-Manglano, Jesús Ruiz-Cantero, A. Ollero-Baturone, M. Development of a six-month prognostic index in patients with advanced chronic medical conditions: The PALIAR score J. Pain Symptom Manage. 10.1016/j.jpainsymman.2013.04.011 2014 2014