For patients allocated to IB-Neostigmine group, a bolus of Rocuronium at a dose of 10mg will be administered after reappearance of TOFC > 2 and depth of neuromuscular blockade will be maintained at TOFC of 1-2. At the end of surgery, a dose of Neostigmine (50mcg/kg) will be given at the reappearance of TOFC of 2.