Fig. 1From: A randomized double-blind multi-center trial of hydrogen water for Parkinson’s disease: protocol and baseline characteristicsSchedule of enrolment, intervention, and assessment. Study period of enrolment, allocation, and baseline may coincide. It is approximately 1 week to 10 days from allocation to the first day to start shipping the water. *1: Unified Parkinson’s Disease Rating Scale. *2: Parkinson’s Disease Questionnaire-39Back to article page