Events of Puberty in 111 Florentine Girls

摘要: Introduction One of the most intriguing problems in pediatrics is reason for progressive secular decline age puberty. In exploration various potentially causative environmental factors, studies using standard methods different cultures have become attractive as ways to resolving this problem, well casting new light on other matters such relationships between early and late development body build prevalence reported menstrual symptoms which appears one major causes loss efficiency working American females. Materials Of group 111 girls provides data report, 77 formed part a sample taken by us 1955 from total 2,934 boys first two grades (sixth seventh) Florence, Italy, junior high schools. Every 15th child was chosen alphabetical lists thus 195