[The value of ultrasonography in the early diagnosis of breast cancer].
Charles
R
R
D000367:Age Factors; D001943:Breast Neoplasms / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008403:Mass Screening / Q000379:methods*; D008875:Middle Aged; D015203:Reproducibility of Results; D013997:Time Factors; D016217:Ultrasonography, Mammary / Q000592:standards*