![Comparison of parental reports of smoking and residential air nicotine concentrations in children]()
Comparison of parental reports of smoking and residential air nicotine concentrations in childrenGehring, U; Leaderer, B P; Heinrich, J; Oldenwening, M; Giovannangelo, M E C A; Nordling, E; Merkel, G; Hoek, G; Bellander, T; Brunekreef, B · Occupational and Environmental Medicine · 2006