原来的估计是810亿美元。
Groundbreaking research from Stanford economist Neale Mahoney indicates an even grimmer situation: Americans are actually saddled with at least $140 billion in outstanding medical debt.
来源:https://siepr.stanford.edu/news/americas-medical-debt-much-worse-we-think#:~:text=Groundbreaking%20research%20from%20Stanford%20economist,billion%20in%20outstanding%20medical%20debt.