Aetna Foundation, the independent philanthropic arm of insurer Aetna Inc., also is sponsoring a study of whether daily lotteries motivate people to stick to warfarin. 安泰保险(AetnaInc.)旗下独立慈善机构安泰基金会(AetnaFoundation)也在赞助一项研究&每天抽奖是否足以激励人们坚持服用华法林(warfarin)。