Relationship of familial cytochrome P450 4V2 gene mutation with liver cirrhosis: A case report and review of the literature

Figure 2 Pedigree of the index patient (II-1). Square: Male; Circle: Female; White symbol: Normal vision; Gray symbol: Night blindness; Black symbol: Completely blind; Bordered symbol: Cirrhosis; Arrow: Proband; Two horizontal lines: Inbreeding of first cousins.