Conversion Disorder; Factitious Disorders; Hysteria; Malingering; Munchausen Syndrome; Social Behavior; Conversion Disorder/ethnology; Conversion Disorder/history; Conversion Disorder/psychology; Diagnosis; Factitious Disorders/ethnology; Factitious Disorders/history; Factitious Disorders/psychology; Gender Identity; History, 20th Century; Hysteria/ethnology; Hysteria/history; Hysteria/psychology; Malingering/ethnology; Malingering/history; Malingering/psychology; Munchausen Syndrome/ethnology; Munchausen Syndrome/history; Munchausen Syndrome/psychology; Physicians/economics; Physicians/history; Physicians/legislation & jurisprudence; Physicians/psychology; Social Class/history; Socioeconomic Factors