YOUNGER AT HEART: A STUDY OF THE P‐R INTERVAL

Publisher: John Wiley & Sons Inc

E-ISSN: 1532-5415|19|3|271-275

ISSN: 0002-8614

Source: JOURNAL OF AMERICAN GERIATRICS SOCIETY, Vol.19, Iss.3, 1971-03, pp. : 271-275

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Abstract