Electronic transmission of personal and/or medical information via an internet website portal or private telecommunications messaging service; Tele-health services connecting patients with medical practitioners via secure video-conferencing platform or via private telecommunications messaging services facilitating medical consultations and issuing of medical certificates; provision of encrypted medical certificates via a telecommunications system or via the internet; electronic booking platform conducted via the internet enabling patients to book consultations with medical practitioners; provision of a web based platform via which medical services are provided and patient documents are transmitted