The stem cell treatment that Barcelona's Luis Suarez will receive to speed up recovery from a knee injury is neither clinically proven nor effective, according to specialist Dr Robert Soler.
Suarez's fine run of recent form has been arrested by a problem in the knee joint sustained against Atletico Madrid at the weekend.
The Uruguayan faces at least two weeks out of action, ruling him out for a series of crucial matches for the Blaugrana at the end of 2018, beginning with Wednesday's Champions League test against PSV.
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Barcelona have confirmed that Suarez will receive Stromal Vascular Fraction treatment on the joint, a cure that involves stem cells harvested from the fatty (adipose) tissue in the body.