The Difference in Effectiveness of 70% and 0.5% Chlorine to ReduceThe Germ Number on Stethoscope’s Membrane Experimental research at stethoscope in Baitul Izah Ward of Sultan Agung Islamic Hospital Semarang Journal title: SAINS MEDIKA (Journal of Medicine and Health) Authors: Heny Pramita, Saugi Abduh, Chodidjah . Subject(s):