Thrombolysis in Patients With Versus Without Visible Occlusion: A Secondary Analysis From the AcT Trial - Anwer Zohaib Siddiqi; Katrina Ignacio; Chitapa Kaveeta; Fouzi Bala; Ayoola Ademola; Aleksander Tkach; Brian H. Buck; Luciana Catanese; Gary Hunter; Dar Dowlatshahi; Michel Shamy; Atif Zafar; et al. (Journal of Stroke)