“…Four of the 18 included papers used formal meditation practice as a primary intervention (52,72,74,76) while seven studies used informal mindfulness exercises (53,63,73,(77)(78)(79)(80) , and the remaining seven studies used a combination of both (54,64,75,(81)(82)(83)(84). Because of a variation in protocols, treatment hours varied from 5 to 43.75, with a…”