Do attempts to change your sleep or wake schedule tend to make your sleeping difficulties worse:Find:Pt:^Patient:Ord:PhenX
do attempts to change your sleep or wake schedule tend to make your sleeping difficulties worse:find:pt:^patient:ord:phenx
Do attempts to change your sleep or wake schedule tend to make your sleeping difficulties worse [PhenX]
do attempts to change your sleep or wake schedule tend to make your sleeping difficulties worse [phenx]