From Cloud Computing to Fog Computing (C2F): The key technology provides services in health care big dataBabur Hayat Malik, Sadaf Nawaz Cheema, Iqra Iqbal, Yasar Mahmood, Majid Ali and Ahmad MudasserMATEC Web Conf., 189 (2018) 03010DOI: https://doi.org/10.1051/matecconf/201818903010