Liao, Hua-FangHua-FangLiaoLee, Su-ChingSu-ChingLeeLien, I-NanI-NanLienChen, Chien-JenChien-JenChen宋維村曾嫦嫦Soong, Wei-TsuenWei-TsuenSoongTseng, Chang-ChangChang-ChangTseng2009-01-202018-06-282009-01-202018-06-281992http://ntur.lib.ntu.edu.tw//handle/246246/103773en-USLocomotor Strategies before Independent Walking:Prospective Study of 50 Mentally Retard Children