End-of-life medical treatment preference discussions and surrogate decision-maker appointments: evidence from Italy, Spain, Belgium and the Netherlands, Evans, N., Pasman H.R., Vega Alonso T., Van den Block L., Miccinesi G., Van Casteren Viviane, Donker G.A., Bertolissi S., Zurriaga O., Deliens L., et al. , B.M.J.Support.Palliat.Care, 1/6/2013, Volume 3, Issue 2, p.235, (2013)