Headache in patients with non-functioning pituitary adenoma before and after transsphenoidal surgery – a prospective study. - Hantelius, Victor; Ragnarsson, Oskar; Johannsson, Gudmundur; Olsson, Daniel S.; Jakobsson, Sofie; Thurin, Erik; Farahmand, Dan; Skoglund, Thomas; Hallen, Tobias (Pituitary, 2024)