Strength Training and Posture Correction of the Neck and Shoulder for Patients with Chronic Primary Headache: A Prospective Single-Arm Pilot Study. - Padrós-Augé, Jordi; Schytz, Henrik Winther; Søgaard, Karen; Donat-Roca, Rafel; Espí-López, Gemma Victoria; Madsen, Bjarne Kjeldgaard (Journal of Clinical Medicine, 2025)