The National Morbidity, Mortality and Air Pollution  Part  Morbidity, Mortality and Air Pollution in the United States.
Air pollution can be liked to morbidity and mortality in big cities.
mnli hypothesis: Air pollution can be liked to morbidity and mortality in big cities. premise: The National Morbidity, Mortality and Air Pollution  Part  Morbidity, Mortality and Air Pollution in the United States.