O'Shaughnessy L (1935-03-02). "Surgery of the Lung Root". The Lancet. Originally published as Volume 1, Issue 5818. 225 (5818): 476–480. doi:10.1016/S0140-6736(01)00729-2. ISSN0140-6736.
O'Shaughnessy L (1935-03-02). "Surgery of the Lung Root". The Lancet. Originally published as Volume 1, Issue 5818. 225 (5818): 476–480. doi:10.1016/S0140-6736(01)00729-2. ISSN0140-6736.