[Efficiency of the propaganda for volunteer blood donation in the opinion of blood donors].
D000293:Adolescent; D000328:Adult; D001771:Blood Banks; D001782:Blood Donors; D005249:Fees and Charges; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011044:Poland
Skuteczność propagandy honorowego krwiodawstwa w ocenie krwiodawców.