QRS prolongation in myotonic muscular dystrophy and diffuse fibrosis on cardiac magnetic resonance.
Nazarian S, Bluemke DA, Wagner KR, Zviman MM, Turkbey E, Caffo BS, Shehata M, Edwards D, Butcher B, Calkins H, et al. Magn Reson Med. 2010 Jul; 64(1):107-14.