Comprehensive geriatric assessment of elderly highlanders in Qinghai, China II: the association of polycythemia with lifestyle-related diseases among the three ethnicities.
Okumiya K, Sakamoto R, Kimura Y, Ishine M, Kosaka Y, Wada T, Wada C, Nakatsuka M, Ishimoto Y, Hirosaki M, et al. Geriatr Gerontol Int. 2009 Dec; 9(4):342-51.