https://pmc.ncbi.nlm.nih.gov/articles/PMC1488723/
Changes in dietary intake from the first to the second trimester of pregnancy - PMC
Rifas-Shiman SL, Rich-Edwards JW, Willett WC, Kleinman KP, Oken E, Gillman MW. Changes in dietary intake from the first to the second trimester of pregnancy....
second trimester of pregnancy