[Telephone support for breastfeeding by primary care: a randomised multicentre trial].

Objective: To evaluate a telephone support programme for mothers who breastfeed for the first 6 months.

Methods: A randomised unmasked clinical trial was conducted in 5 urban Primary Care centres that included mothers with healthy newborns who were breastfeeding exclusively (EBF) or partially (PBF). The control group received the usual care.