Juan Cotumba
Juan Cotumba Coa is a Bolivian road bicycle racer. He is the winner of the 2011 Vuelta a Bolivia and 2014 Vuelta al Sur de Bolivia races.Doping
On 17 August 2014 Cotumba gave an adverse analytical finding for Furosemide and was subsequently banned for one year until 16 August 2015.;2005
;2006
;2009
;2010
;2011
;2012
;2013
;2014