Method
A search of MEDLINE, CINAHL, PsycINFO, and Scopus was conducted. MeSH search terms included "adolescent," "adolescent behavior," "adolescent development," "adolescent psychiatry," "adolescent psychology," "homosexuality (male and female)," "mental health," and "primary health care" in a variety of combinations. Google and Google Scholar were also searched, and selected journals were searched directly for pertinent articles. An ancestry search of relevant papers was also performed. Search results were limited to English language literature published between 2000 and 2012; however, key examples of literature older than 10 years were included.