[Studies on the motivation for donating blood].
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D001782:Blood Donors; D005260:Female; D005859:Germany, East; D006801:Humans; D008297:Male; D008875:Middle Aged; D009042:Motivation
Untersuchung über das Motiv zu Blutspende.