by Gassert, F. T., Kufner, A., Gassert, F. G., Leonhardt, Y., Kronthaler, S., Schwaiger, B. J., Boehm, C., Makowski, M. R., Kirschke, J. S., Baum, T., Karampinos, D. C., Gersing, A. S.
Published in Osteoporosis international (01.02.2022)

by David Leonhardt y Jenniofer Bayot
Published in El norte (28.07.2002)

by Leonhardt, BY David
Published in International herald tribune (15.04.2010)

by Amy Barrett, Joann Muller, John Carey y David Leonhardt
Published in El norte (14.12.1998)

by Amy Barrett, Joann Muller, John Carey y David Leonhardt
Published in Reforma (Mexico City, Mexico : 1993) (14.12.1998)