Figure 1
From: PediDraw: A web-based tool for drawing a pedigree in genetic counseling
![Figure 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1471-2350-8-31/MediaObjects/12881_2007_Article_225_Fig1_HTML.jpg)
A hypothetical clinical pedigree tree with migrane. When choosing "Output type 2", the Table 1 is converted to a four-degree graph connected by the relationship lines. The symbols used in this graph are accepted in a standardized pedigree as described by Bennett, et al. [1]