Affiliations Research 1995[position unknown]Dalhousie University Faculty Of Medicine1988[position unknown]Dalhousie University1995[position unknown]Dalhousie University1977[position unknown]University Of Pennsylvania1978[position unknown]University Of Pennsylvania 1977[subject unknown]Research Assistants1978[subject unknown]Research Assistants1988[subject unknown]Principal Investigators1995[subject unknown]Other Research Personnel1995[subject unknown]Library Readers