1 Department of Dermatology and Reference Center for Genodermatoses and Rare Skin Diseases (MAGEC), Université de Paris AP-HP-5, Hôpital Universitaire Necker-Enfants Malades, Paris, France.
2 Breast Milk bank, Hôpital Universitaire Necker - Enfants Malades, Paris, France.
3 Department of Bacteriology, Hôpital Universitaire Necker - Enfants Malades, Paris, France.