[1] IZAAK WALTON KILLAM HOSP CHILDREN,HALIFAX B3J 3G9,NS,CANADA
[2] VICTORIA GEN HOSP,HALIFAX B3H 2Y9,NS,CANADA
[3] DALHOUSIE UNIV,DEPT MICROBIOL,HALIFAX B3H 4H7,NS,CANADA
[4] DALHOUSIE UNIV,DEPT PEDIAT,HALIFAX B3H 4H7,NS,CANADA
[5] DALHOUSIE UNIV,DEPT MED,DIV INFECT DIS,HALIFAX B3H 4H7,NS,CANADA