Known human population events inferred from either archaeological or molecular studies and used to calibrate dating analyses.

n, number of haplotypes used in pair-wise IMa simulations.kya, kilo years ago.hp, Helicobacter population.hsp, Helicobacter sub-population.hspAmerind South America, South American subclade within hspAmerind.hspAmerind North America, North American subclade within hspAmerind.hspMaori Taiwan, the subgroup of hspMaori isolated in aboriginal people of Taiwan.hspMaori Pacific, a derived subclade within hspMaori consisting of isolates from the Philippines, Melanesia, Polynesia and New Zealand.