Following this interval in the United States, in 1929, he began to specialize in thoracic medicine at the Royal Victoria Hospital in Montreal.

在美国工作的这段时间之后，1929年，他开始成为蒙特利尔的皇家维多利亚医院胸科医学专家。

It stimulated an interest in thoracic medicine, especially the surgical aspects in this field and for a couple of years he worked at a tuberculosis hospital in the United States.

这激发了他对心胸科医学，特别是该领域的外科方面的兴趣，促使他在美国的一家肺病医院工作了几年。