Smyth, Bobby P and Hannigan, A and Cullen, Walter (2016) Cocaine use in young adults: correlation with early onset cannabis, alcohol and tobacco use. Irish Medical Journal , 109 , (9) .

Swan, D and Hannigan, A and Higgins, S and McDonnell, R and Meagher, D and Cullen, W (2017) Development and implementation of a 'Mental Health Finder' software tool within an electronic medical record system. Irish Journal of Medical Science , 186 , (1) , pp. 191-200.