Comparative evaluation of the efficacy of nicotine chewing gum and nicotine patches as nicotine replacement therapy using salivary cotinine levels as a biochemical validation measu... by T Sivasankari, Avudaiappan Sankaran, Senthil Murugappan, Veni Subramanyam, Balanehru Subramanian, RC Jagat Reddy, S Vandana

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