This book is thus a unique, comprehensive reference with evidence-based approach to provide concise summary of researches for such as schizophrenia, affective disorders, psychiatric disorders in the general practice setting, and disaster psychiatry, especially for the case of atomic bomb diseases. The studies were mostly carried out in the region of Nagasaki, the prefecture experienced a nuclear attack at the time of World War Ⅱ. Psychiatric findings in mental health problems among atomic bomb survivors and sufferers in Nagasaki has been established and Nagasaki is the only area that fulfills the conditions of the subject of the study of psychiatric epidemiology and social psychiatry which is going to be described in this book.