positive staircase phenomenon 正阶梯现象
negative staircase phenomenon 负阶梯现象
bowditch staircase phenomenon Bowditch阶梯现象
woodworth staircase phenomenon Woodworth阶梯现象
electrical staircase phenomenon 心电阶梯现象
special electrical staircase phenomenon 特殊类型心电阶梯现象
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