Wiltse approach learning curve is short, with a simple micro-hooks and other minimally invasive surgical instruments relative to the expansion chamber is more easily replicable.

椎旁肌间隙入路的操作学习曲线短，配合微型拉钩等简单手术器械相对于微创扩张管道更容易推广。

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"They enabled poor and working-class Americans to gain access to the good life, " said Jeff Wiltse, a history professor at the University of Montana and author of a social history of swimming pools.

WSJ: Awash in History, McCarren Park Pool Reopens