Key Factors Determining Indoor Air PM Concentrations in Naturally Ventilated Primary Schools in Belgrade, Serbia.

Introduction: Indoor air quality (IAQ) is rated as a serious public health issue. Knowing children are accounted as more vulnerable to environmental health hazards, data are needed on air quality in schools.

Methods: A project was conducted from 2007 until 2009 (SEARCH, School Environment and Respiratory Health of Children), aiming to verify links between IAQ and children's respiratory health.