PT - JOURNAL ARTICLE AU - F.P. Gorodzinsky TI - A step backward DP - 2003 Jul 08 TA - Canadian Medical Association Journal PG - 15--16 VI - 169 IP - 1 4099 - http://www.cmaj.ca/content/169/1/15.4.short 4100 - http://www.cmaj.ca/content/169/1/15.4.full SO - CMAJ2003 Jul 08; 169