APA

Cullen G., Keegan D., Mulcahy H. E. & O'Donoghue D. P. (20090409). A 5-year prospective observational study of the outcomes of international treatment guidelines for Crohn's disease. : Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association.

Chicago

Cullen Garret, Keegan Denise, Mulcahy Hugh E and O'Donoghue Diarmuid P. 20090409. A 5-year prospective observational study of the outcomes of international treatment guidelines for Crohn's disease. : Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association.

Harvard

Cullen G., Keegan D., Mulcahy H. E. and O'Donoghue D. P. (20090409). A 5-year prospective observational study of the outcomes of international treatment guidelines for Crohn's disease. : Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association.

MLA

Cullen Garret, Keegan Denise, Mulcahy Hugh E and O'Donoghue Diarmuid P. A 5-year prospective observational study of the outcomes of international treatment guidelines for Crohn's disease. : Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association. 20090409.