Preface: Solomon, B.D.; Considering the Embryopathogenesis of VACTERL Association: Stevenson, R.E.; Hunter, A.G.W.; VATER/VACTERL Association: Evidence for the Role of Genetic Factors: Reutter, H.; Ludwig, M.; VACTERL Association Etiology: The Impact of de novo and Rare Copy Number Variations: Brosens, E.; Eussen, H.; van Bever, Y.; van der Helm, R.M.; Ijsselstijn, H.; Zaveri, H.P.; Wijnen, R.; Scott, D.A.; Tibboel, D.; de Klein, A.; Exome Sequencing and High-Density Microarray Testing in Monozygotic Twin Pairs Discordant for Features of VACTERL Association: Solomon, B.D.; Pineda-Alvarez, D.E.; Hadley, D.W.; Hansen, N.F.; Kamat, A.; Donovan, F.X.; Chandrasekharappa, S.C.; Hong, S.-K.; Roessler, E.; Mullikin, J.C.; NISC Comparative Sequencing Program; Sonic Hedgehog Signaling and VACTERL Association: Ngan, E.S.-W.; Kim, K.-H.; Hui, C.-c.; Adriamycin-Induced Models of VACTERL Association: Mc Laughlin, D.; Hajduk, P.; Murphy, P.; Puri, P.; Mitochondrial Factors and VACTERL Association-Related Congenital Malformations: Siebel, S.; Solomon, B.D.; Diabetic Embryopathy: A Developmental Perspective from Fertilization to Adulthood: Castori, M.; VACTERL-H Association and Fanconi Anemia: Alter, B.P.; Rosenberg, P.S.; Clinical, Genetic and Environmental Factors Associated with Congenital Vertebral Malformations: Giampietro, P.F.; Raggio, C.L.; Blank, R.D.; McCarty, C.; Broeckel, U.; Pickart, M.A.; Author Index.