According to statistics compiled by Multiple Births Canada, 60 per cent of triplets, 90 per cent of quads and 99 per cent of quintuplets in Canada are the result of infertility treatments.

• 加拿大多胞胎协会（MultipleBirthsCanada）收集的数据表明：加拿大60%25的三胞胎，90%25的四胞胎和99%25的五胞胎都是治疗不育症的结果。