TY - JOUR T1 - Searching for El Dorado: the impossibility of finding the right rate JF - Canadian Medical Association Journal JO - CMAJ SP - 880 LP - 881 VL - 167 IS - 8 AU - Norman Frohlich AU - Noralou P. Roos Y1 - 2002/10/15 UR - http://www.cmaj.ca/content/167/8/880.abstract ER -