CONFIDENTIALITY: All information is kept strictly confidential. Blood is sent to the laboratory with an identification number (instead of a name).
DIAGNOSTIC INTERVIEW: A procedure in which the individual is interviewed by trained personnel.
DNA LINKAGE STUDY: A study to identify the genes responsible for Unipolar Recurrent Depressive Disorder. Blood samples are used to create living cell lines that are stored at a central laboratory. DNA from these cells is saved for scientific analyses.