Fasting baseline blood samples in chilled packages were collected from 28,345 (71 percent) participants via overnight courier, centrifuged immediately, aliquotted, and then stored in liquid nitrogen freezers at 140C for 10 years until analyzed.
Fasting baseline blood samples in chilled packageswere collected from 28,345 (71 percent) participants viaovernight courier, centrifuged immediately, aliquotted, andthen stored in liquid nitrogen freezers at 140C for 10years until analyzed.