Many parents opposed to providing the HPV vaccine to their pre-teens agree the vaccine is safe and effective, but find talking to their children about sex uncomfortable. Elizabeth Lange, of Waterman Pediatrics in Providence, RI, addresses this concern by emphasizing what the vaccine is doing for the child. Lange suggests parents should focus on the cancer prevention aspect without being distracted by words like 'sexually transmitted'. Everyone wants cancer prevention, yet here parents are denying their children a form of protection due to the nature of the cancer—Lange suggests that this much controversy would not surround a breast cancer or colon cancer vaccine. The HPV vaccine is suggested for 11-year-olds because it should be administered before possible exposure to HPV, but also because the immune system has the highest response for creating antibodies around this age. Lange also emphasized the studies showing that the HPV vaccine does not cause children to be more promiscuous than they would be without the vaccine.