Jacquemin B, Schikowski T, Carsin AE, Hansell A, Kramer U, Sunyer J, Probst-Hensch N, Kauffmann F, Kunzli N. The role of air pollution in adult-onset asthma: a review of the current evidence. Semin Resp Crit Care. 2012 Dec;33(6):606-19. doi: 10.1055/s-0032-1325191
Norton EC, Zarkin GA, Calingaert B, Bradley CJ. The effect of maternal substance abuse on the cost of neonatal care. Inquiry. 1996;33(3):247-57.