The phylogenetic network identified fourteen haplotypes in total and multiple haplotypes in each of the four populations (Fig. 5). In total, PRA had two haplotypes, SOB had four haplotypes, SWE had six haplotypes and NOR had three haplotypes. The SWE haplotypes were overall most different among each other (Fig. 5). The PRA and the SOB haplotypes were more similar to those of the SWE population than to those of the NOR population. However, the NOR population differed by only 4 and 5 base substitutions from the most similar haplotypes of SOB and PRA, respectively (Fig. 5). The PRA population shared one identical haplotype with SWE, whereas SOB differed by one base from the most similar haplotypes of SWE as well as of PRA.