Algorithm 2: Monitoring patient body vital parameters

Input: patientID, doctorID Output: patient_body_parameters pragma solidity ^0.5.12; mapping(address => address) authorizedDoctor;  if( isDoctorAuthorized(patientID))  {   Read the patient body parameters;   transaction is recorded in the blockchain;  }  else  Revert the transaction;  function public isDoctorAuthorized(address patientID) public view return (bool display)  {    if(msg.sender == authorizedDoctor(patientID))     return true;    else     return false;  }