Construction of biological reference standards for pediatrics and perinatology.

After examination of 10,341 newborns (5005 females and 5336 males) born in the year 1987 and within the period 1997-1999 at the Provincial Hospital in Bialystok centile chart were created to include the following anthropometric parameters: body mass at birth, total length, crown-rump length, head circumference, chest circumference.