Turppo, V., Sund, R., Huopio, J., Kröger, H., & Sirola, J. (2022). Pain medication purchases before and after total hip and knee arthroplasty: a register study of 329,743 arthroplasties. Acta Orthopaedica, 93, 534–541. https://doi.org/10.2340/17453674.2022.2929