Pain is a multidimensional and subjective experience, and an ideal pain management regime needs to be comprehensive, integrative and involve all relevant persons. Multimodal interventions may include pharmacological, physical, social, psychological and spiritual approaches in order to address pain management at a molecular, functional,…

In causal mediation analysis, the definitions of the natural direct and indirect effects involve potential outcomes that can never be observed, so-called a priori counterfactuals. This conceptual challenge translates into issues in identification, which requires strong and often unverifiable assumptions, including sequential ignorability.…

Marijuana has been used medically since antiquity. In recent years there has been a resurgence of interest in medical applications of various cannabis preparations. These drugs have been cited in the medical literature as potential secondary treatment agents for severe pain, muscle spasticity, anorexia, nausea, sleep disturbances, and numerous…