Bio-Material
To obtain DNA, a blood or saliva sample was collected, DNA was extracted and stored in the LATER study biobank. Additional blood samples were drawn from survivors and siblings and stored in -80°C in several aliquots for study questions and future central analyses. For specific outcomes (renal and splenic function), blood was analyzed directly in the lab of the local center. For some sub-studies, we also collected a semen specimen, urine sample, and saliva sample.