Please choose the correct ending to complete the given sentence: Health: [header] How to cure bow legs [title] Wait and watch. [step] If your child is under three years old, bow-legs will likely fix themselves. Monitor your child as they grow and develop to make sure the bow in their legs is diminishing.

Ending1: [substeps] Prior to onset of bow or hip dysplasia, you should change your child's routine to help them move more freely. Once they start experiencing a stroke, they may stay longer. Ending2: If you notice any irregularity in their gait as they begin walking, talk with your pediatrician. [substeps] Note that " watching and waiting " is the mainstay of treatment for young children with bow-legs. Ending3: If the child is older than three years, their legs should start to look and feel better within a week. [title] Recognize why you suspect bow-legs. Ending4: In particular, look for : [substeps] Worsening conditions: severe grades, poor performance on test days. [title] Watch for your child to develop bow muscles, especially head.

Answer format: ending1/ending2/ending3/ending4