The phenotype of MEGF8-related Carpenter syndrome (CRPT2) is refined through the identification of eight new patients by Watts, LM, Bertoli, M, Attie-Bitach, T, Roux, N, Rausell, A, Paschal, CR, Zambonin, JL, Curry, CJ, Martin, B, Tooze, RS, Hawkes, L, Kini, U, Twigg, SRF, Wilkie, AOM