“…While much has been written about the individual psychological and behavioural determinants of adherence, such as social support (Bearman & La Greca, 2002), and mental well-being (Kilbourne, Reynolds, Good, & Sereika, 2005), the literature on structural barriers is much less developed. Structural barriers are the social, economic, institutional, political and cultural domains that collectively make up the social structures that to a greater or lesser extent influence behaviour (Shriver, Everett, & Morin, 2000;Sumartojo, 2000).…”