That prowess has been questioned by some of the regime's opponents because of unofficial reports that Fidel Castro, Cuba一些古巴政权反对派对那种医疗优势提出质疑，因为据小道消息称，古巴国务委员会主席菲德尔?卡斯特罗因肠壁肿胀患憩室炎而进行三次（大肠）手术[注：国内媒体均报道为肠道内出血]但却均失败。