https://obi.org/blood-donation/scientific-facts/ https://obi.org/blood-donation/scientific-facts/ https://obi.org/blood-donation/scientific-facts/ https://obi.org/blood-donation/scientific-facts/ 98% of whom, in america, are Black https://obi.org/blood-donation/scientific-facts/ https://obi.org/blood-donation/scientific-facts/ https://obi.org/blood-donation/scientific-facts/ https://obi.org/blood-donation/scientific-facts/ https://obi.org/blood-donation/scientific-facts/ https://obi.org/blood-donation/scientific-facts/ https://obi.org/blood-donation/scientific-facts/ https://obi.org/blood-donation/scientific-facts/