Authors: Laura M. Calvi, G. B. Adams, Kathryn Weibrecht, Jonathan M. Weber, David P. Olson, Melissa C. Knight, Roderick P. Martin, Ernestina Schipani, P. Divieti, F. Richard Bringhurst, Laurie A. Milner, Henry M. Kronenberg, David T. Scadden - Nature 2003 cited by 3,429