REVIEwS

1. The role of hydrogen sulfide in gastric mucosal damage
2. Clinical utility of hyperbaric oxygen therapy in dentistry
3. Ozone therapy:a potential therapeutic adjunct for improving female reproductive health
4. Recent advances in the neuroprotective effects of medical gases

LETTERS TO THE EDITOR

1. Pediatric dental sedation
2. Minimum alveolar concentration based anesthesia in high altitude and anesthetic overdose:result needs cautious acceptance

MEETING REPORT

1. 2019 International Hydrogen Molecular Medicine Summit

RESEARCH ARTICLES

1. Effect of different doses of intrathecal dexmedetomidine on hemodynamic parameters and block characteristics after ropivacaine spinal anesthesia in lower-limb orthopedic surgery:a randomized clinical trial
2. Premedication effect of melatonin on propofol induction dose for anesthesia,anxiety,orientation and sedation after abdominal surgery:a double-blinded randomized trial
3. Effects of hydrogen-rich water bath on visceral fat and skin blotch,with boiling-resistant hydrogen bubbles
4. Hydrogen gas therapy improves survival rate and neurological deficits in subarachnoid hemorrhage rats:a pilot study