Dancause KN, Veru F, Andersen RE, Laplante DP, King S. (2013) Early Hum Dev. 89(9) 773-6 Elsevier Ltd.
Please find related research here:
Laplante et al., 2007 - Functional Play at 2 Years of Age: Effects of Prenatal Maternal Stress
Dancause et al., 2012 - Prenatal exposure to a natural disaster increases risk for obesity in 5½-year-old children.