[The age at menarche in the school population of Messina].
Guarniere
J
J
Ferlazzo
G
G
Amagliani
G
G
D001695:Biology; D019049:Developed Countries; D005060:Europe; D007558:Italy; D011154:Population Characteristics
Biological Characteristics; Biology; Developed Countries; Europe; Italy; Mediterranean Countries; Southern Europe