Since the affiliation of our research team at Institut de Recerca Sant Joan de Deu, a fruitful program of collaborative research in pediatric endocrinology has developed with the team leaded by Dr. Lourdes Ibàñez. Recent results on the importance of sex differences in brown fat activity in the first year of life and the role of the batokine CXCL14 have been presented at the III IRSJD Scientific Meeting  held at Facultat de Biologia, University of Barcelona, the last  October, 28 These results have been recently published at J Clin Endocr Metab.