The Cost of Unintended Pregnancies in Canada: Estimating Direct Cost, Role of Imperfect Adherence, and the Potential Impact of Increased Use of Long-Acting Reversible Contraceptives

加拿大意外怀孕的成本：估算直接成本、依从性差的影响以及增加使用长效可逆避孕方法的潜在影响