RT Journal Article SR Electronic T1 Promoting the sustainability of healthcare resources with existing ethical principles: scarce COVID-19 medications, vaccines and principled parsimony JF Journal of Medical Ethics JO J Med Ethics FD BMJ Publishing Group Ltd and Institute of Medical Ethics SP 104 OP 105 DO 10.1136/medethics-2020-107132 VO 47 IS 2 A1 Vong, Gerard YR 2021 UL http://jme.bmj.com/content/47/2/104.abstract AB