Multilocus comparison between Romani populations from different European countries, autochthonous European populations and populations from north India The polymorphic systems included in the analysis comprised A1A2BO, MN, haptoglobin and Rh (CDE), with a total of 11 independent alleles. Information on these markers was available for the Roma in Slovakia (n = 350) , Hungary (n = 507) , England (n = 109) , Slovenia (n = 350) , Sweden (n = 115)  and Wales (n = 84) , for non-Roma Europeans (n = 5169) and for two north Indian populations, Rajput (n = 175) [34,35] and Punjabi (n = 140) [35,36]. Genetic distances between pairs of populations were computed by means of Reynold's coancenstry coefficient  and displayed as a neighbour-joining tree . The robustness of the branches in the tree was assessed with a bootstrap approach . The analysis was conducted using the PHYLIP 3.57c package .
Kalaydjieva et al. BMC Medical Genetics 2001 2:5 doi:10.1186/1471-2350-2-5