[1] Univ Coimbra, Fac Med, Coimbra, Portugal
[2] Univ Porto, Fac Med, CINTESIS Ctr Hlth Technol & Serv Res, Porto, Portugal
[3] Univ Porto, MEDCIDS Dept Ciencias Informacao & Decisao Saude, Porto, Portugal
[4] Cruz Vermelha Portuguesa, Escola Super Sande Cruz Vermelha Portuguesa, Lisbon, Portugal
[5] Ctr Reg Hlth Adm, Family Hlth Unit Fernando Namora, Coimbra, Portugal
[6] Univ Beira Interior, Fac Hlth Sci, Covilha, Portugal
[7] Ctr Reg Hlth Adm, Family Hlth Unit Beira Ria, Aveiro, Portugal
[8] Kings Coll London, Cicely Saunders Inst Palliat Care Policy & Rehabi, London, England