Categories of Vulnerable Subjects
§ Pregnant women
§ Infants, children and minors
§ Cognitively impaired persons
§ Prisoners
§ Traumatized and comatose patients
§ Terminally ill patients
§ Elderly/aged persons
§ Economically/educationally disadvantaged
Source: http://ohrp.osophs.dhhs.gov/irb/irb_chapter6.htm