Fitzgerald, J Edward F.; Fitzgerald, Lucy A.; Maxwell-Armstrong, Charles A.; Brooks, Adam J. (2009). „Recurrent gallstone ileus: Time to change our surgery?”. Journal of Digestive Diseases. 10 (2): 149—151. PMID19426399. S2CID43696188. doi:10.1111/j.1751-2980.2009.00378.x.
Fitzgerald, J Edward F.; Fitzgerald, Lucy A.; Maxwell-Armstrong, Charles A.; Brooks, Adam J. (2009). „Recurrent gallstone ileus: Time to change our surgery?”. Journal of Digestive Diseases. 10 (2): 149—151. PMID19426399. S2CID43696188. doi:10.1111/j.1751-2980.2009.00378.x.
Fitzgerald, J Edward F.; Fitzgerald, Lucy A.; Maxwell-Armstrong, Charles A.; Brooks, Adam J. (2009). „Recurrent gallstone ileus: Time to change our surgery?”. Journal of Digestive Diseases. 10 (2): 149—151. PMID19426399. S2CID43696188. doi:10.1111/j.1751-2980.2009.00378.x.