Group 1 = phylogenetic group A; Group 2 = phylogenetic group B1; Group 3 = phylogenetic group B2; Group 4 = phylogenetic group D. The median (min - max) was 320 (15 - 2810), 28 (25 - 31), 142 (13 - 2500), 320 (130 - 2512) for Groups A, B1, B2, and D respectively.