His clinical work is in the field of thoracic medicine, and his research team is studying gene-environmental interaction in COPD, asthma, lung cancer and air pollution. He is involved in the training of higher degree students in translational research into lung diseases.

He is a Chair of the National COPD Guidelines Committee of the Lung Foundation Australia, and a member of the COPD Coordinating Committee. He is Chair of the Medical Programs and Research Advisory Committee of the Asthma Foundation Queensland NSW.