4CE i2b2 4CE data upload util Nicholas Brown DB/Web Ken Huling DB James B. Norman Web Griffin Weber DB Weberlab DBMI Harvard Medical School Publication: https://www.researchgate.net/publication/347508367_International_Comparisons_of_Harmonized_Laboratory_Value_Trajectories_to_Predict_Severe_COVID-19_Leveraging_the_4CE_Collaborative_Across_342_Hospitals_and_6_Countries_A_Retrospective_Cohort_Study