Methic meth methicillin-resistant staphycoccus epidermidis methacryloyloxyethyl trimethyl ammonium chloride methi-cillin-resistant Staphylococcus aureus Methicillin resistant staphylococcus haemolyticus methacrylate-butadiene-styrene copolymer resin methacrylate divalent quaternary ammonium dibromide methacrylate monovalent quaternary ammonium bromide methamidophos-trichlorphon emulsifiable concentrate methadone maintenance and aftercare treatment program methicikkin-resistant staphykococcus aureus infection