[Use of a uniform questionnaire for blood and plasma donors].
D001782:Blood Donors / Q000331:legislation & jurisprudence*; D005858:Germany; D006801:Humans; D009313:National Health Programs / Q000331:legislation & jurisprudence*; D010949:Plasma; D011785:Quality Assurance, Health Care / Q000331:legislation & jurisprudence; D012955:Societies, Medical; D011795:Surveys and Questionnaires