But Mika Kivimaki,of the Finnish Institute of Occupational Health,and his colleagues,who studied the medical histories of 812 healthy Finnish men and women in a metal industry company over 25 years,said job stress also plays an important role.

• 然而，在过去的25年里，芬兰职业卫生研究所米卡·基维迈基和他的同事们对芬兰一家金属公司的812名健康芬兰职工进行了长期的病史跟踪研究。结论是: 工作压力过大同样也是导致心脏病发作的重要因素之一。