Fig. 3From: A series of N-of-1 trials to assess the therapeutic interchangeability of two enalapril formulations in the treatment of hypertension in Addis Ababa, Ethiopia: study protocol for a randomized controlled trialFlow of participants through the study. * This washout period is an analytic washout period. Blood pressure measurements taken in the first 2Â days of each period will be discarded during the analysis stage to allow for washoutBack to article page