Berlin Grading System Can Stratify the Onset and Predict Perioperative Complications in Adult Moyamoya Disease. Issue 6 (1st December 2017) - Kashiwazaki, Daina; Akioka, Naoki; Kuwayama, Naoya; Houkin, Kiyohiro; Czabanka, Marcus; Vajkoczy, Peter; Kuroda, Satoshi