@article{30bb42456dd547cfbc74ec2437cb54f9,
title = "End-on parailar bronchi and chronic bronchitis in workers of travertine quarries",
abstract = "End-on bronchi are circular rings that appear in the posteroanterior chest X-ray. When they are thickened, they predict the presence of anamnestic chronic bronchitis in workers exposed to travertine (a variety of calcium carbonate) dust.",
keywords = "chest X ray, chronic bronchitis, dust-exposed workers, occupational COPD, chest X ray, chronic bronchitis, dust-exposed workers, occupational COPD",
author = "Flaminio Mormile and A Bisbano and M Gliozzi and G Ciappi",
year = "1991",
language = "English",
volume = "4",
pages = "352--352",
journal = "European Respiratory Journal",
issn = "0903-1936",
publisher = "Blackwell Munksgaard:PO Box 2148, Periodicals Department, DK-1016 Copenhagen K Denmark:011 45 33 755913, EMAIL: agentservices@oxon.blackwellpublishing.com, INTERNET: http://www.blackwellmunksgaard.com, Fax: 011 45 77 333377",
}