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Figure 4 : Correlation between the duration of stages III and IVAbove: Correlation between the duration of stages III and IV (in minutes per night, ordinates) and the concentration of 5-HIAA in the urine excretion during the same day (in mg per 1000 ml) (abcissae); scales in 100 mg. r = 0.9114, n = 44, P < 0.001./p> Below: Correlation between stage III and IV and the dose of DL-5-HTP given during the same day (abcissae); dose in grams. r = 0.6099, n = 54, P < 0.001 |