William Ewart (1848 - 1929) was an English physician. Ewart signs of pericardial effusion (1896) and his twelve signs of pericardial effusion
Leopold Auenbrugger von Auenbrugg (1722 – 1809). Austrian Physician who described the use of chest percussion in the diagnosis of respiratory disease.
The latest Emergency Musical Interlude features an excerpt of Swedish guerrilla percussionists at work, from the film Sound of Noise.