Clinical Analysis and Differential Diagnosis of Non-conducted Premature Atrial Contractions Using a Lorenz-RR Scatter Plot and Reverse Technique 
WU Qiuhua,GONG Chun,WU Honglin
Chinese General Practice . 2019, (36): 4515 -4519 .  DOI: 10.12114/j.issn.1007-9572.2019.00.587