Monoclonal antibodies during breastfeeding - challenges with relative infant dosePaulina Flis*1, Gro C. Havnen*2, Elisabet Nordmo2, Annika Asplund1, Eva Wikström1*shared first authorship1 Division of Clinical Pharmacology, Department of Laboratory Medicine, Karolinska Institute and Clinical pharmacology, Medical Diagnostics Karolinska, Karolinska University Hospital2Regional Medicines Information and Pharmacovigilance Centre (RELIS), Oslo/Tromsø, NorwayCorrespondence: paulina.flis@ki.seDisclosure statement : The autors declares no conflicts of interests related to this paper.