Letter to the Editor: "The effect of chiropractic care on infantile colic: results from a single-blind randomised controlled trial" and "Identifying potential treatment effect modifiers of the effectiveness of chiropractic care to infants with colic through prespecified secondary analyses of a randomised controlled trial"

致编辑的信：“脊椎按摩疗法对婴儿肠绞痛的影响：一项单盲随机对照试验的结果”和“通过对一项随机对照试验的预先设定的二次分析，确定脊椎按摩疗法治疗婴儿肠绞痛疗效的潜在治疗效果调节因素”