Neurokinin-1-receptor antagonism decreases anxiety and emotional arousal circuit response to noxious visceral distension in women with irritable bowel syndrome: a pilot study. - Tillisch, K.; Labus, J.; Nam, B.; Bueller, J.; Smith, S.; Suyenobu, B.; Siffert, J.; McKelvy, J.; Naliboff, B.; Mayer, E. (Alimentary Pharmacology & Therapeutics, 2012)