207例0~2岁女童单纯乳房早发育相关危险因素分析
杨玉, 王荻兰
Risk factors of 207 cases of 0 to 2-year-old girl early breast development.
YANG Yu, WANG Di-lan.
中国儿童保健杂志 . 2014, (2): 190 -193 .