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