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Table 1 Schedule of enrollment, treatment and outcome assessment

From: Chinese herbal formula Tongxie Yaofang for diarrhea-predominant irritable bowel syndrome: study protocol for a randomized, multiple-blind, placebo-controlled trial

  1. TXYF Tongxie Yaofang Granules, IBS-SSS irritable bowel syndromes symptom severity score
  2. Routine examination including blood routine, urine routine, stool routine, and occult blood test (OBT); biochemical indexes including liver function (aspartate aminotransferase (AST) and alanine aminotransferase (ALT)) and kidney function (blood urea nitrogen (BUN), creatinine)