Organization of Kaiser Permanente and Strategic Partners Patient Outcomes Research to Advance Learning (PORTAL) Network and PCORnet data infrastructures. CESR, Center for Effectiveness and Safety Research; DCC, Data Coordinating Center; KPCO, Kaiser Permanente Colorado; KPGA, Kaiser Permanente Georgia; KPHI, Kaiser Permanente Hawaii; KPMA, Kaiser Permanente Mid-Atlantic; KPNC, Kaiser Permanente Northern California; KPNW, Kaiser Permanente Northwest; KPSC, Kaiser Permanente Southern California; TBD, to be determined; VDW, Virtual Data Warehouse.