title: Blood donor eligibility, recruitment, and retention.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000740:Anemia; D001172:Arthritis, Rheumatoid; D001782:Blood Donors; D005260:Female; D006331:Heart Diseases; D006801:Humans; D006967:Hypersensitivity; D007328:Insulin / Q000627:therapeutic use; D008297:Male; D008875:Middle Aged; D009042:Motivation
chemical_list: D007328:Insulin