Fig. 6.

Frequencies of vertebral patterns for fetuses with a different number of affected organ systems. Vertebral patterns are indicated with R, LS, TL, TL_LS, CT, CT_LS, CT_TL, CT_TL_LS, see Fig. 2 for an explanation. The number of organ systems affected: No Mal—no organ system affected, one to three or more than three organ systems affected, overall-represents the entire population of our dataset. The group with no malformations has the largest frequency of regular patterns and the group with more than three organ systems affected has the largest frequency of the most abnormal vertebral pattern (CT_TL_LS)