Rasenack, R Factors Associated with the Duration of Breastfeeding in the Freiburg Birth Collective, Germany (FreiStill). [electronic resource] - Geburtshilfe und Frauenheilkunde Jan 2012 - 64-69 p. digital Publication Type: Journal Article ISSN: 0016-5751 Standard No.: 10.1055/s-0031-1280470 doi