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Br Heart J
v.57(1); Jan 1987
Br Heart J.
The authors reply
I A D O'Brien and R J M Corrall
Department of Medicine, Bristol Royal Infirmary, Bristol BS2 8HW.
See the letter "
Heart rate variability in healthy subjects: effect of age and derivation of normal ranges for tests of autonomic function.
" on page 109a.
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