Digital Pregnancy Test Powered by an Air-Breathing Paper-Based Microfluidic Fuel Cell Stack Using Human Urine as Fuel. - Irma Lucia Vera-Estrada; Juan Manuel Olivares-Ramírez; Juvenal Rodríguez-Reséndiz; Andrés Dector; Jorge Domingo Mendiola-Santibañez; Diana María Amaya-Cruz; Adrian Sosa-Domínguez; David Ortega-Díaz; Diana Dector; Victor Manuel Ovando-Medina; Iveth Dalila Antonio-Carmona (Sensors, 2022)