%0 Journal Article %T Retraction Notice: Research on Algorithm of Extracting PPG Signal for Detecting Atrial Fibrillation based on Probability Density Function %A Fuying Tian %A Kang Liang %A Shenghua Ye %A Ying Sun %J Archive of "The Open Biomedical Engineering Journal". %D 2016 %R 10.2174/1874120701610010117 %X The Publisher and Editor have retracted this article [1] in accordance with good ethical practices. After a thorough investigations we believe that the peer review process was compromised. The article was published on-line on 31-08-2015 %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6460416/