Corrigendum: Does Severity of Alzheimer's Disease Contribute to Its Responsiveness to Modifying Gut Microbiota? A Double Blind Clinical Trial - Agahi, Azadeh; Hamidi, Gholam Ali; Daneshvar, Reza; Hamdieh, Mostafa; Soheili, Masoud; Alinaghipour, Azam; Taba, Seyyed Mohammad Esmaeili; Salami, Mahmoud (Frontiers in Neurology, 2019)