From CN... there are going to be lots of problems for various riders in this case. Look, every non-doping pro rider worth his salt works with medical staff and trainers, somewhat simultaneously, to ensure proper workouts and nutrition. The science behind training, racing and recovering is very advanced, and since these guys get paid to bike, they're not gonna just thumb through the Cyclists' Training Bible to design their workouts. So we're all going to have to wait for more serious confirmation than "he knows the doctor" before assuming any level of guilt.
Besides, if Oscar Sevilla has been doping, he's doing a piss-poor job of it.