麦克·格罗克特（Mike Grocott），这次探险活动的领导者，说这项由他的同事休·蒙哥马利（Hugh Montgomery）在几年前发起的研究提出：基因变异可能和这个问题有关。
Mike Grocott, the expedition's leader, says that research published a few years ago by his colleague Hugh Montgomery suggests genetic variability may, indeed, be involved.
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