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Like the case of the 10-year-old girl who for several years couldn't use the toilet at school unassisted because of the lack of wheelchair-friendly facilities.

Eleven of 12 infants who received a higher dose of the therapy were able to sit unassisted, speak and be fed orally.

In his final years, he was unable to move unassisted, required a ventilator to breathe, and lived with chronic heart and respiratory failure.

Memorable moment: Cleveland second baseman Bill Wambsganss turns an unassisted triple play in Game 5.

Gradually work your way up to an unassisted pull-up.