Adducted thumbs: A clinical clue to genetic diagnosis

J. M.A. Verhagen, C. T.R.M. Schrander-Stumpel, M. M.J. Blezer, J. W. Weber, J. J.P. Schrander, M. E. Rubio-Gozalbo, J. A. Bakker, A. P.A. Stegmann, Y. J. Vos, S. G.M. Frints^*

^*Corresponding author for this work