| Head Length to Body Length Ratio | Body Center | Head Circumference | Chest Circumference | |
|---|---|---|---|---|
| At Birth | 1/4 | Navel | 34 cm | 32~33 cm |
| At 1 Year | 46 cm | Equal to head circumference | ||
| At 2 Years | 1/5 | 48 cm | Approximately equal to head circumference + age | |
| At 5 Years | 50 cm | |||
| At 6 Years | 1/6 | Navel and Pubis | ||
| At 12 Years | 1/7 | Upper Edge of Pubic Symphysis |
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