{HEAD ~ The frame} is preferably a metallic structure capable of being tilted to modify the planar position of the bedding without requiring the concurrent repositioning of {TAIL ~ the patient} 
{ HEAD ~ The frame } is preferably a metallic structure capable of being tilted to modify the planar position of the bedding without requiring the concurrent repositioning of { TAIL ~ the patient }
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL