Using PEth and AUDIT-4 to Detect Harmful Alcohol Use Among People with Severe Substance Use. - Auestad, Nina; Jørgenrud, Benedicte; Bogstrand, Stig Tore; Vallersnes, Odd Martin; Lerdal, Anners; Wüsthoff, Linda Elise Couëssurel (Substance Use & Misuse, 2026)