As an important part of higher education, professional basic courses are the key carrier to implement the fundamental task of ...

Condoms do not fully protect against sexually transmitted infections (STIs) spread through skin-to-skin contact, like HPV and herpes. Using condoms that fit well and checking the expiration date can ...

The authors of this article, published in 2015, have written a response to their work in light of the COVID-19 pandemic. We urge our readers to consider the response ...