Ferreira, Francisca T. S. M.Mesquita, Raquel B. R.Rangel, António O. S. S.2024-10-022024-10-022018http://hdl.handle.net/10400.14/46836engDesign and assembly of microfluidic paper-based analytical devices (µPAD) for the quantification of nitrite and nitrate in salivaconference object