M. Muñoz-Guerra, E. Delgado-Baeza, J. Sánchez-Hernández, and J. García-Ruiz, “Chondrocyte cloning in aging and osteoarthritis of the hip cartilageMorphometric analysis in transgenic mice expressing bovine growth hormone”, ActaO, vol. 75, no. 2, pp. 210–216, Jan. 2004.