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. Author manuscript; available in PMC: 2018 Jul 1.
Published in final edited form as: Environ Int. 2017 Apr 7;104:122–131. doi: 10.1016/j.envint.2017.03.024

Figure 4.

Figure 4

Figure 4A: Meta-analysis of high frequency maternal cell phone use during pregnancy and risk for hyperactivity problems within the clinical range in children ages 5–7, as compared to low frequency maternal cell phone use in cohorts where cell phone data was collected prospectively.

Figure 4B: Meta-analysis of high frequency maternal cell phone use during pregnancy and risk for hyperactivity problems within the clinical range in children ages 5–7, as compared to low frequency maternal cell phone use in cohorts where cell phone data was collected retrospectively.