title: Bias in patient series with VACTERL association.
authors: Ekkehart
authors: E
authors: Jenetzky
authors: Charlotte H W
authors: CH
authors: Wijers
authors: Carlo M
authors: CM
authors: Marcelis
authors: Nadine
authors: N
authors: Zwink
authors: Heiko
authors: H
authors: Reutter
authors: Iris A L M
authors: IA
authors: van Rooij
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D011247:Pregnancy