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Childhood adversity and cumulative life stress: risk factors for cancer-related fatigue

It is evident that some variation in the estimated values can be seen when comparing the outcomes of different studies
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10.1038/s41575-023-00800-4 105 YuL.HongW.LuS.LiY.GuanY.WengX.et al (2022)

Amitriptyline can have also anticholinergic, arrhythmogenic, and behavioral side effects, thus it can cause constipation, dry mouth, sedation, QT prolongation, increased appetite