Straand, Jørund. “How Often Do General Practitioners Prescribe Antibiotics for Otitis Media and the Most Common Respiratory Tract Infections?”. Norsk Epidemiologi 11, no. 1 (November 6, 2009). Accessed May 5, 2024. https://www.ntnu.no/ojs/index.php/norepid/article/view/537.