Second World War 31 European history 30 History of medicine 30 Postwar 20th century history, from c 1945 to c 2000 25 Modern warfare 6 c 1938 to c 1946 (World War Two period) 6 History and Archaeology 5 Later 20th century c 1950 to c 1999 5 History of the Americas 2 Indigenous peoples 2 Relating to Indigenous peoples 2 Adult 1 Australasian and Pacific history 1 Behavioral Medicine 1 Biography: general 1 Biography: historical, political and military 1 Female 1 History of engineering and technology 1 Hospitals, Military 1 Humans 1 Income 1 Male 1 Mental Health Services 1 Middle Aged 1 Patient Preference 1 Patient Satisfaction 1 Patient satisfaction 1 Patients 1 Poverty 1 Primary Health Care 1