Julvez J, Forns M, Ribas-Fito N, Mazon C, Torrent M, Garcia-Esteban R, Ellison-Loschmann L, Sunyer J. Psychometric characteristics of the California Preschool Social Competence Scale in a spanish population sample. Early Educ Dev. 2008;19(5):795-815.
Pekar Z, Stone S, Mansfield CA. National-scale activity survey: public awareness of and response to information on air pollution conveyed through the air quality index (AQI). Presented at the Environmental Protection Agency Workshop on Environmental Behavior and Decision Making; January 2008. New York, NY.
Real FG, Svanes C, Omenaas ER, Anto JM, Plana E, Jarvis D. Lung function, respiratory symptoms, and the menopausal transition. J Allergy Clin Immunol. 2008 Jan;121(1):72-80.