Serum levels of the novel adipokine isthmin-1 are associated with obesity in pubertal boys.

"Declarations Conflict of interestNo financial or non-financial benefits have been received or will be received from any party related directly or indirectly to the subject of this article. Ethical approvalAll procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Conflict of interest No financial or non-financial benefits have been received or will be received from any party related directly or indirectly to the subject of this article."

"Funding Funding for open access charge: Universidad de Granada / CBUA. This work was supported by the Plan Nacional de Investigación Científica, Desarrollo e Innovación Tecnológica (I + D + I), Instituto de Salud Carlos III-Health Research Funding (FONDOS FEDER) (PI051968, PI1102042 and PI1600871); Maria C. Rico is funded by Redes temáticas de Investigación cooperativa RETIC (Red SAMID RD12/0026/0015) and the Mapfre Foundation."