AU - Kuehn BM TI - POllution may delay pregnancy PT - JOUR DP - 2012 TA - JAMA pages = {2557}, VI - 308 IP - 24 AID - 10.1001/jama.2012.156131 [doi] 4100 - http://dx.doi.org/10.1001/jama.2012.156131 SO - JAMA December 26, 2012 308(24):2557