TY - JOUR T1 - Varicella control and vaccine coverage: issues and challenges JF - Canadian Medical Association Journal JO - CMAJ SP - 631 LP - 632 VL - 166 IS - 5 AU - Tamara Wallington AU - Erica Weir Y1 - 2002/03/05 UR - http://www.cmaj.ca/content/166/5/631.abstract ER -