Looks like you clickedhttps://www.researchgate.net/profile/Guenther-Birbamer/publication/20867301_Citicoline_in_the_treatment_of_Parkinson's_disease/links/5a1c1ef20f7e9be37f9c31bd/Citicoline-in-the-treatment-of-Parkinsons-disease.pdf
If you do not want to visit that page, you can close this browser tab.