Xavier Durán

Clinical and Radiological Outcomes of Organising Pneumonia Secondary to COVID-19: A 2-Year Longitudinal Cohort Study

Background: Organising pneumonia secondary to COVID-19 (OP-COVID-19) is a recognised inflammatory complication of SARS-CoV-2 infection. We assessed the 2-year clinical, radiological, and functional evolution of patients hospitalised with OP-COVID-19 and identified factors indepen...

Why Was the Wheel (Not) Used in the Andes? A Hypothesis Explaining the Slow Adoption of Wagon Transport and Evidence from Nineteenth-Century Colombia

The slow adoption of wagon transport in the Andes is a puzzle. We examine it by developing a threshold technology-adoption model calibrated using human and mule energy consumption and unique historical data from a human trail and the first wagon road in the Andes. Model predictio...