Parents smoking in their cars with children present.
Nabi-Burza E, Regan S, Drehmer J, Ossip D, Rigotti N, Hipple B, Dempsey J, Hall N, Friebely J, Weiley V, Winickoff JP. Parents smoking in their cars with children present. Pediatrics. 2012 Dec; 130(6):e1471-8.