Manuale del bodybuilder:Vitamin D - https://ods.od.nih.gov/factsheets/VitaminD-HealthProfessional/Panoramica generale dei PED - https://en.wikipedia.org/wiki/Performance-enhancing_substanceampio catalogo di preparati farmacologici - mysportsxpert.comOrmone della crescita negli atleti - https://pubmed.ncbi.nlm.nih.gov/24636303/European Journal of Drug Metabolism - https://link.springer.com/journal/11332 Contraloría Lineamientos de Entrega- Recepción Lineamientos-para-la-entrega-recepcion-de-la-administracion-publica