[1] Univ Coll Cork, Dept Physiol, Cork, Ireland
[2] Univ Coll Cork, Dept Med, Cork, Ireland
[3] Univ Coll Cork, Alimentary Pharmabiot Ctr, Dept Psychiat, Cork, Ireland
[4] Mercy Univ Hosp, Cork, Ireland
[5] Cork Univ Hosp, Dept Neurol, Cork, Ireland
[6] Trinity Coll Dublin, Trinity Biomed Sci Inst, Sch Med, Dept Physiol, Dublin, Ireland