1. Exposure to oxides of nitrogen: respiratory symptoms and lung function in British coalminers;Robertson, A.; Dodgson, J.; Collings, P.; Seaton, A.;Br J Industr Med; The natural history of chronic bronchitis and emphysema,1976
2. Cardiac tamponade following dislodgement of a left atrial catheter following coronary artery bypass;Bricker, D.L.; Dalton, M.L.;J Thorac Cardiovasc Surg,1973