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Additional file 1: Table S1. siRNAs sequence. Table S2. The list of primers. Figure S1. Relative expression of HOXA-AS2 in BV2 cells transfected with HOXA-AS2 overexpression plasmid or siRNAs. Figure S2. RNA-Protein Interaction Prediction database was used to analyze the binding potential of EZH2, SUZ12 and RbAp48 to HOXA-AS2.

This paper investigates how the Fresh Fruits and Vegetable Program (FFVP), a national program which provides funding for the distribution of free fresh fruits and vegetables to students in participating schools, affects childhood obesity. Using a panel data set, we combine matching methodology and difference-in-differences analysis to estimate the effect of the FFVP on childhood obesity outcomes. The results suggest that estimates of the FFVP effect are very sensitive to use of different matching methods. With the use of a stricter matching method, the estimate of the FFVP effect is negative and significant, indicating that the program reduces children’s body mass index. Less strict matching methods yield opposite results.