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2. Growth at Adolescence;Tanner,1962
3. The Gynecology of Childhood and Adolescence;Huffman,1981
4. The gynecologic examination of the prepubertal child with vulvovaginitis: Use of the knee-chest position;Emans;Pediatrics,1980
5. Radiographic Atlas of Skeletal Development of the Hand and Wrist;Greulich,1959