Prenatal diagnosis in laminin aα2 chain (merosin)-deficient congenital muscular dystrophy: a collective experience of five international centers - Vainzof, Mariz; Richard, Pascale; Herrmann, Ralf; Jimenez-Mallebrera, Cecilia; Talim, Beril; Yamamoto, Lydia U; Ledeuil, Céline; Mein, Rachael; Abbs, Stephen; Brockington, Martin; Romero, Norma B; Zatz, Mayana; et al. (Neuromuscular Disorders, 2005)