[An interventional study to improve breast-feeding conditions in obstetric clinics of a model region in Bavaria]. 
Breastfeeding is influenced amongst other aspects by the support of the medical staff in clinics.  Therefore WHO and UNICEF have implemented the programme "ten steps to successful breastfeeding" and the certificate "Baby friendly hospital" to promote breastfeeding in clinics.  When the study "Breastfeeding in Bavaria" was started only two clinics in Bavaria were certified as baby friendly.  In a Bavarian region where breastfeeding rates were significantly lower than in other regions an intervention study will be conducted.  The aim of the study is to educate the clinic staff in the support of breastfeeding mothers.  This paper describes the aims and methods of this intervention study.