Fig. 6

State of health economics literature during the last three decades of development. Salient parts of the map specify active areas of research during each year, as reflected in instances of article co-citation. A dynamic visualisation from 1990–2021 is available here https://unisyd-my.sharepoint.com/:v:/g/personal/clara_zwack_sydney_edu_au/EeT-KZTsqdJHuGzL6s-R9ksBzmQ0ln-2jjYJu5Cv7F0usg?e=pkaOqt