Beckstrøm, S. ., K. . Svendsen, and L. . Småbrekke. “Antibacterial Use by Birth Year and Birth Season in Children 0-2 Years in Norway : ”. Norsk Epidemiologi, vol. 29, no. 1-2, Aug. 2021, doi:10.5324/nje.v29i1-2.4044.