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Vaginal bleeding during pregnancy and preterm birth.
Yang J, Hartmann KE, Savitz DA, Herring AH, Dole N, Olshan AF, Thorp JM Jr. Yang J, et al. Among authors: hartmann ke. Am J Epidemiol. 2004 Jul 15;160(2):118-25. doi: 10.1093/aje/kwh180. Am J Epidemiol. 2004. PMID: 15234932
Caffeine and miscarriage risk.
Savitz DA, Chan RL, Herring AH, Howards PP, Hartmann KE. Savitz DA, et al. Among authors: hartmann ke. Epidemiology. 2008 Jan;19(1):55-62. doi: 10.1097/EDE.0b013e31815c09b9. Epidemiology. 2008. PMID: 18091004
158 results