Have you ever had a sudden spell of double vision, which lasted 24 H or longer:Find:Pt:^Patient:Ord:PhenX
have you ever had a sudden spell of double vision, which lasted 24 h or longer:find:pt:^patient:ord:phenx
Have you ever had a sudden spell of double vision, which lasted 24 H or longer:Finding:To identify measures at a point in time:^Patient:Ordinal:PhenX
have you ever had a sudden spell of double vision, which lasted 24 h or longer:finding:to identify measures at a point in time:^patient:ordinal:phenx