@article {:1997:01149954:16, title = "Tramadol: Respiratory depression in an elderly patient: case report", journal = "Reactions", volume = "1", year = "1997", abstract = "", pages = "16-16(1)", url = "http://www.ingentaconnect.com/content/adis/rea/1997/00000001/00000659/art00034" }