Quantitative LC/MS/MS analysis of acetaminophen–cysteine adducts (APAP–CYS) and its application in acetaminophen overdose patients by Taha, Hairin, Rahman, Marzilawati Abdul, Haron, Didi Erwandi Mohamad, Mahadeva, Sanjiv, Kee, Lee Yean, Abd Rahman, Noorsaadah, Mohd, Mustafa Ali, Chik, Zamri