Dr.Richard Karas of Tufts University School of Medicine in Boston and colleagues did not look directly at patients for their study, published in the Journal of the American College of Cardiology.

• 波士顿查夫德大学医学院理查德格拉瑞博士和他的同事没有正面对病人进行研究；他们的报告发表在美国心脏专科学院的杂志上.