Vasovagal reactions in blood donors.
D000328:Adult; D000367:Age Factors; D001782:Blood Donors; D001789:Blood Group Antigens; D005260:Female; D006801:Humans; D008297:Male; D009790:Occupations; D010167:Pallor / Q000453:epidemiology; D011446:Prospective Studies; D012737:Sex Factors; D013546:Sweating; D013575:Syncope / Q000175:diagnosis / Q000453:epidemiology* / Q000209:etiology / Q000517:prevention & control; D014839:Vomiting / Q000453:epidemiology
D001789:Blood Group Antigens