1 European Association for Palliative Care Research Network, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan 20133, Italy. Electronic address: augusto.caraceni@istitutotumori.mi.it.
2 European Association for Palliative Care Research Network, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan 20133, Italy; Organisation of European Cancer Institutes, Fondation Universitaire, Brussels, Belgium.