At @ wk postpartum , mean -LSB- nmol/L ( @ % CI ) -RSB- infant @ ( OH ) D at @ wk was higher in the @-g/d -LSB- @ ( @ , @ ) -RSB- than in the @-g/d -LSB- @ ( @ , @ ) -RSB- or @-g/d -LSB- @ ( @ , @ ) -RSB- vitamin D groups ( P < @ ) .