Effect of an information intervention on opioid prescribing: a preregistered nationwide randomized experiment / Iiro Ahomäki (Jyväskylä University and The Social Insurance Institution of Finland), Petri Böckerman (Jyväskylä University and IZA), Jaakko Pehkonen (Jyväskylä University), Leena Saastamoinen (Finnish Medicines Agency) ; IZA Institute of Labor Economics
