Hands-and-knees-crawling is an important motor developmental milestone and a unique window into the development of central nervous system (CNS). Mobility during crawling is regularly used in clinical assessments to identify delays in motor development. However. possible contribution from CNS impairments to motor development delay is still unknown. https://www.roneverhart.com/HP-Chromebook-X360-14b-ca0013dx-14-HD-Touchscreen-1366-x-768-Laptop-Intel-Celeron-N4000-4-GB-RAM-32-GB-eMMC-Intel-UHD/