Another influential application of the capability approach has been within the field of public health ethics and health justice. Both Prah Ruger (2009) and Venkatapuram (2011) have articulated comprehensive theories of health justice, the latter of which has influenced the work of the World Health Organization. Nielsen (2015) provides an argument for why capability theorists should care about health, namely because of its constitutive role in human well-being and agency. Byskov (2019) argues that the capability approach requires a qualitative rather than quantitative interpretation of the principle of the least restrictive means, which is central to public health ethics (Beauchamp and Childress 2001). Applied to healthcare ethics, Entwistle and Watt (2013a; 2013b) argue that a capability approach requires the adoption of person-centred care, while Millar (2013) argues that the capability approach can be used to evaluate the justice of infectious disease control measures within healthcare institutions. The capability approach has also been widely adopted by philosophers as a framework to analyze aspects of the ethics and philosophy of disability (Harnacke 2013; Nussbaum 2006; Riddle 2013; 2014; Terzi 2010; Wynne Bannister and Venkatapuram 2020).