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Secondary cancer. https://www.macmillan.org.uk/cancer-information-and-support/secondary-cancer Accessed September 30, 2020
Cancers. https://www.wcrf.org/dietandcancer/cancers Accessed September 30, 2020
Cancer Staging. https://www.cancer.org/treatment/understanding-your-diagnosis/staging.html Accessed September 30, 2020
Stages of cancer. https://www.cancerresearchuk.org/about-cancer/what-is-cancer/stages-of-cancer Accessed September 30, 2020
Cancer Staging. https://www.cancer.gov/about-cancer/diagnosis-staging/staging Accessed September 30, 2020
Stages of cancer. https://www.cancer.nsw.gov.au/about-cancer/cancer-basics/stages-of-cancer Accessed September 30, 2020
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Types of Cancer（Stanford Health Care）https://stanfordhealthcare.org/medical-conditions/cancer/cancer/cancer-types.html Accessed January 05, 2022
癌症末期怎麼辦？癌末常見症狀及治療方法（亞洲大學附屬醫院）https://www.auh.org.tw/NewsInfo/HealthEducationInfo?docid=2136 Accessed January 11, 2022
