9. data collectionTo collect this information. Working Group has posted the interview and manual building. Brightness. Samitivej srinakarin hospital Faculty of medicine, Khon Kaen University by completing the following steps. Bringing the interview to collect data to study the population by randomly based on the attributes that are defined in the header, for example, by the use of data collection conducted an interview and bring innovative Roller Walker to experiment with KKU sample of 10 people without a trial approximately 30 minutes per person and take action during day 4 hours 08.30 a.m. November 10-2558. Up to 16.00 hrs.
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