“…In one-third of the subjects, the residual volume: total lung capacity ratio was decreased, which led Friberg to suggest that emphysema was present. The Swedish report was then supported by observations made in Germany by BAADER (1951) and in the United Kingdom by BONNELL (1955), BON-NELL et al (1959), KAZANTZIS (1956), KAZANTZIS et al (1963), BUXTON (1956), andADAMS et al (1969). The symptoms and findings in these studies were also suggestive of emphysema.…”