Housing, Citizenship, and Communities for People with Serious Mental Illness: Theory, Research, Practice, and Policy PerspectivesHousing has emerged as a popular and central topic of research, mental health system development, and social and mental health policy in recent years. The field has rapidly evolved in a number of ways: first, with the introduction and popularization of the Housing First approach; second, there are now a growing number of randomized controlled studies to evaluate the lives of people living in this housing; and third, there is increasing recognition of