References:-
1. Symptoms of cancer. Available on: https://www.cancer.gov/about-cancer/diagnosis-staging/symptoms Accessed on 9 Oct 2020.
2. Schiffman JD, Fisher PG, Gibbs P. Early detection of cancer: past, present, and future. American Society of Clinical Oncology Educational Book. 2015;35(1):57-65
3. Elkaddoum R et al. Telemedicine for cancer patients during COVID-19 pandemic: between threats and opportunities. Future Oncol. 2020 Apr : 10.2217/fon-2020-032.