Committee on Substance Abuse Committee on Substance Abuse The Committee on Substance Abuse (COSA) produces guidance for pediatricians, state and federal government, and other stakeholders to reduce harm from substance use. Welcome to the Committee on Substance Abuse. Learn more about this Resources View key resources, including policy statements, from the Committee on Substance Abuse. Information on Marijuana Information and resources related to marijuana use and legalization. Grant Initiatives Check out the grant-funded activities related to substance use. Committee Roster View the COSA committee roster. What's New? Resources on E-cigarettes A collection of resources on electronic nicotine delivery systems (ENDS) Video on Brief Intervention View one approach on how to address a family’s concern about marijuana. Alcohol Screening and Brief Intervention for Youth: A Practitioner’s Guide The guide includes a 2-question risk assessment as well as links to resources for motivational interviewing.