Chapters by Prof. Koichi Hirata

• Book Chapter Sleep Disturbances in Patients with Parkinson’s Disease
  by Keisuke Suzuki, Tomoyuki Miyamoto, Masayuki Miyamoto, Ayaka Numao, Hideki Sakuta, Hiroaki Fujita, Yuji Watanabe, Masaoki Iwanami and Koichi Hirata in the book "A Synopsis of Parkinson's Disease" edited by Abdul Qayyum Rana, ISBN 978-953-51-1229-7, InTech, March 3, 2014
• Book Chapter Nocturnal Disturbances in Patients with Parkinson’s Disease
  by Keisuke Suzuki, Tomoyuki Miyamoto, Masayuki Miyamoto, Masaoki Iwanami and Koichi Hirata in the book "Symptoms of Parkinson's Disease" edited by Abdul Qayyum Rana, ISBN 978-953-307-464-1, InTech, September 9, 2011