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((("African Continental Ancestry Group"[Mesh]) OR africa*[tiab]) AND (("Nova Scotia"[Mesh]) OR "nova scotia"[tiab]))
((("African Continental Ancestry Group"[Mesh]) OR africa*[tiab]) AND (("Nova Scotia"[Mesh]) OR
"nova scotia"[tiab] OR ("New Brunswick"[Mesh]) OR "new brunswick"[tiab] OR
("Newfoundland and Labrador"[Mesh]) OR "newfoundland and labrador"[tiab] OR
("Prince Edward Island"[Mesh]) OR "prince edward island"[tiab]))