美国联合健康集团公布的一项调查结果表明，精神信念是年逾百岁的老人经常提到的长寿秘诀。
BOSTON ( Reuters ) - Faith and spirituality were cited most often by people over the age of100 as the source of their longevity , according to a survey sponsored by a unit of UnitedHealth Group .
美国联合健康集团