TIME TO STONE PASSAGE FOR OBSERVED URETERAL CALCULIA GUIDE FOR PATIENT EDUCATION EDITORIAL COMMENTPreminger, Glenn M.Author informationDuke Comprehensive Kidney Stone Center; Duke University Medical Center; Durham, North CarolinaJournal of Urology 162(3-I):p 690-691, September 1999.Copyright © 1999 by the American Urological Association, Inc.