As the largest city in South Korea, Seoul has advanced and varied medical services. Contraceptives can be purchased at pharmacies over-the-counter though you need a doctor's prescription for emergency contraception. While many facilities offer STI tests, it is important to exercise caution and choose anonymous testing centers. If you are a foreigner and test positive for HIV/AIDS or syphilis, you will most likely be deported from South Korea. While abortion is illegal, there are accounts of women secretly obtaining abortions. If you are pregnant and have the means to travel, it is advisable to seek abortions elsewhere, such as in mainland China, Hong Kong or Japan.