Mutations were identified by
comparison to the revised Cambridge Reference Sequence (rCRS)
with the SeqScape Software1 v2.7 (Life Technologies GmbH,
Darmstadt, Germany). Haplogroups were assigned using the mtDNA
phylotree (http://www.phylotree.org/tree/main.htm) and the on-
line program Haplogrep (http://haplogrep.uibk.ac.at/). Haplotype
frequencies were determined by a haplotype search in the EMPOP
database