Table 5.

Sources of vulnerability identified independently from vulnerable groups

Policy/Guideline	Sources of vulnerability
Declaration of Helsinki	An increased likelihood of being wronged or of incurring harm
UNESCO Declaration	Persons may be rendered vulnerable by disease or disability or other personal, societal or environmental conditions
TCPS2	Persons may be in vulnerable circumstances because of social or legal stigmatisation associated with their activity or identity

TCPS2 Tri-Council Policy Statement: Ethical Conduct for Research Involving Humans