Before revision: Background In the 21 st century surveys indicated that around half of men in countries across the world have been interested in using a variety of novel contraceptive methods, and men in clinical trials for male contraceptives have reported high levels of satisfaction with the products.
After revision: Background In the 21st century, surveys indicated that around half of men in countries across the world have been interested in using a variety of novel contraceptive methods, and men in clinical trials for male contraceptives have reported high levels of satisfaction with the products.