1. Local circulatory changes associated with clubbing of the fingers and toes;Wilson;Q J Med,1952
2. Blood flow in the clubbed finger after heat vasodilatation;Price;Clin Sci,1966
3. Digital capillary blood flow in clubbing;Racoceanu,1971
4. Digital clubbing: a unique case and a new hypothesis;Gold;J Hand Surg,1979
5. The morphology of clubbing;Bigler;Am J Path,1958