Since 1986, Dr.Mah began to study the pathological changes of stomach cancer in the early stage and started his job on the clinical research of cancer prophylaxis and treatment.

• 1986年起承担中国国家教委博士基金课题，有关胃癌前期病变中医药治疗研究，开始从事中医药防治癌症的临床科研工作。