Dear Editor,We reviewed the paper by Liu et al[1],as part of an umbrella review on PM2.5 and the incidence of respiratory outcomes.We determined that the authors did not account for the PM_(2.5) increments based upon ...Dear Editor,We reviewed the paper by Liu et al[1],as part of an umbrella review on PM2.5 and the incidence of respiratory outcomes.We determined that the authors did not account for the PM_(2.5) increments based upon which primary studies reported their results.展开更多
文摘Dear Editor,We reviewed the paper by Liu et al[1],as part of an umbrella review on PM2.5 and the incidence of respiratory outcomes.We determined that the authors did not account for the PM_(2.5) increments based upon which primary studies reported their results.
