Black carbon as a major contributor to ambient PM2.5-related cause-specific outpatient risks: Implications for early warning and health benefits evaluation of air quality improvement
Ambient fine particulate matter (PM2.5) poses acute multi-organ health risks, but evidence on its constituent-specific early-stage morbidity risks remains limited. We conducted a nationwide time-stratified case-crossover study using over 212 million daily outpatient records for 12 major diseases from 274 Chinese cities...