Figure 1.

Rates of NTDs in Newfoundland and Labrador, 1976 to 2001 (3-year moving average rates) *The rate for 1976 is a 2-yr average based on data for 1976 and 1977 and the rate for 2001 is a 2-yr average based on data for 2000 and 2001.

Liu et al. BMC Pregnancy and Childbirth 2004 4:20   doi:10.1186/1471-2393-4-20
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