Citation

Alley RH. J. Am. Med. Assoc. JAMA 1964; 188: 418-422.

Copyright

(Copyright © 1964, American Medical Association)

DOI

unavailable

PMID

14125216

Abstract

[Abstract unavailable]

Keywords: American football; Soccer

Language: en

Keywords

ADOLESCENCE; HEAD INJURIES; NECK; SPORT MEDICINE; STATISTICS