Media type: E-Article Title: Is Randomization Really Appropriate for Progression Studies of Test-positive Contact Persons? Contributor: Diel, Roland imprint: American Thoracic Society, 2011 Published in: American Journal of Respiratory and Critical Care Medicine Language: English DOI: 10.1164/ajrccm.183.12.1732a ISSN: 1073-449X; 1535-4970 Keywords: Critical Care and Intensive Care Medicine ; Pulmonary and Respiratory Medicine Origination: Footnote: Access State: Open Access