Erratum to: DL- and PO-phosphatidylcholines as a promising learning and memory enhancer.

Erratum

The original version of this article unfortunately contained a mistake. Section “Materials and methods” subsection “participants” was incorrect in the HTML and PDF versions of this article. The original article stated: “Participants The study for human was approved by Institutional Review Board at Hyogo College of Medicine and informed consent was obtained from all the participants”, this should read: “Participants The study for human was performed in Tsuna Hospital (Hyogo, Japan) and informed consent was obtained from all the participants.”