<p>The Figure presents the individual pupils that participated in the FUNDAJ-Survey. Pupils are colored according to their school. Location of pupils is assigned by a Fruchtermann-Reingold algorithm [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0176094#pone.0176094.ref036" target="_blank">36</a>] centered around the location of their school within the city of Recife. Grey lines indicate friendships between pupils as registered by the survey. As social networks where solely surveyed within schools, isolated components appear for each school.</p
