| 摘要 |
A mattress having a head end and a foot end comprises a first support section configured to support an occupant's feet, legs, and seat, and a second support section located adjacent the head end of the mattress to support an occupant's back and head. A portion of the head support section is movable toward the head end of the mattress as the second support section is moved to an elevated position relative to the first support section.
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