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
Hoogeveen EK, Rothman KJ. Hyperhomocysteinemia increases the risk of death in type 2 diabetes. Cardiovasc Rev Rep. 2001;22:207-12.