MOESM4 of Accessibility and factors associated with utilization of mental health services in youth health centers. A qualitative comparative analysis in northern Sweden GoicoleaIsabel Hultstrand AhlinCecilia WaenerlundAnna-Karin MarchalBruno ChristiansonMonica WiklundMaria HurtigAnna-Karin San SebastianMiguel 2018 Additional file 4. XY plot showing relationship consistent with necessity.