・ WHO Study WPRO Expert Group. Hospitals within healthcare systems: Their capacity to
meet the needs of populations - Western Pacific Region. WHO, August 2001.
(Imanaka Y as the principal investigator for the Western Pacific Region)
・ OECD study of cross-national differences in the treatment, costs and outcomes of ischaemic heart disease (OECD
Health Working Papers NO.3) 22-April-2003.
・ Stroke care in OECD countries: A comparison of treatment, costs and
outcomes in 17 countries (OECD Health Working Papers NO.5) 06-June-2003.
・ The performance of hospitals under changing socioeconomic conditions: A global
study on hospital sector reform. WHO, 2007. (Imanaka Y as the principal
investigator for the Western Pacific Region)