The vicissitudes of change.
D000553:Ambulatory Care; D001071:Appointments and Schedules; D001290:Attitude; D001291:Attitude of Health Personnel; D002908:Chronic Disease; D006739:Hospital Administration; D008505:Medical Staff, Hospital; D010044:Outpatient Clinics, Hospital; D010361:Patients; D010564:Personnel, Hospital; D011787:Quality of Health Care; D012494:Sampling Studies