In comparison with placebo , the proportion of infants with @ ( OH ) D @ ng/mL was larger in both intervention groups to age @ months : cord blood ( @ % , @ % , @ % , P < @ ) , @ months ( @ % , @ % , @ % , P < @ ) , and @ months ( @ % , @ % , @ % , P = @ ) , but only in the higher-dose group at age @ months ( @ % , @ % , @ % , P = @ ; higher dose versus placebo P = @ , lower dose versus placebo P = @ ) .