Contributing factor complexities. Many informants identified various associations between contributing factors (risk and susceptibility factors) and key themes. To illustrate these associations, factors were mapped analogous to constellations in the night sky. Large circles represent key themes and small circles represent contributing factors. The associations identified by informants were grouped to form constellations (outlined by connecting lines). The 3 diagrams exemplify some of the main complexities and associations discussed during the case study. These included risk and susceptibility factors associated with: A. culture and ethnicity, B. travel, and C. age.