1. The effectiveness of Sustained Natural Apophyseal Glide on Flexion Rotation Test, pain intensity, and functionality in subjects with Cervicogenic Headache: A Systematic Review of Randomized Trials Author Cardoso, Ricardo, Seixas, Adérito, Rodrigues, Sandra, Moreira-Silva, Isabel, Ventura, Nuno, Azevedo, Joana, and Monsignori, Filippo Published 2022 Full Text View/download PDF