The randomized controlled trial on the effects of aromatherapy for the cancer patients

INTERVENTION: Multiple treatments group: 6 times/12 weeks Single treatment group: once/12 weeks CONDITION: Hepatocellular carcinoma, Cholangiocarcinoma, Pancreatic cancer Gastric cancer PRIMARY OUTCOME: Quality of life SECONDARY OUTCOME: Serological marker; Salivary stress marker INCLUSION CRITERIA: 1.Patients at Juntendo University Nerima Hospital with a diagnosis of cancer clinically or histologically visit outpatient chemotherapy regulary, and their prognosis can be expected three months or more. 2.ECOG performance status of the patients with 0 or 1. 3.Patients were obtained consent by performing a sufficient explanation prior to the start of the study for the study entry.