ORTEGA-ORTEGA, Marta; MONTERO-GRANADOS, Roberto  and  JIMENEZ-AGUILERA, Juan de Dios. Differences in the economic valuation and determining factors of informal care over time: the case of blood cancer. Gac Sanit [online]. 2018, vol.32, n.5, pp.411-417.  Epub Dec 07, 2020. ISSN 0213-9111.