Concealed atrial quadrigeminy.
S
S
Kinoshita
F
F
Okada
M
M
Okada
D000368:Aged; D005117:Cardiac Complexes, Premature / Q000175:diagnosis / Q000503:physiopathology*; D004562:Electrocardiography; D006325:Heart Atria / Q000503:physiopathology; D006801:Humans; D008297:Male