Как я могу установить собственные имена для заголовков CSV через Node JS?

const express = require("express");
        const bodyParser = require("body-parser");
        const mongoose = require("mongoose");
        const updateRouter = require('./update-router');
        const fs = require('fs');
        const fastcsv = require('fast-csv');
        var iconv = require('iconv-lite');
        const app = express();
        //-----------------------------------------------------
        app.use(bodyParser.urlencoded({
          extended: true
        }));
        
        app.use(express.static("public"));
        app.use('/updatepage', updateRouter);
        app.use((req, res, next) => {
          console.log(req.method + " : " + req.url);
          next();
        });
        app.set("view engine", "ejs");
        
        //-----------------------------------------------------
        
        mongoose.connect('mongodb+srv://admin-vlad:VP25102001VP@hospitalproject.cxdut.mongodb.net/hospital', {
          useNewUrlParser: true
        });
        
        const patientsSchema = {
          historyOfPatient: {
            type: Number,
            unique: true,
            required: true
          },
          surnameOfPatient: String,
          nameOfPatient: String,
          midnameOfPatient: String,
          genderOfPatient: String,
          dateOfBirthday: String,
          dateOfBirthdayForUpdate: String,
          ageOfPatient: Number,
          ageGroupOfPatient: String,
          addressofPatient: String,
          dateOfArriving: String,
          dateOfArrivingForSearching: Date,
          dateOfArrivingForUpdate: String,
          dateOfBeingFree: String,
          dateOfBeingFreeForUpdate: String,
          bedDayOfPatient: String,
          extraHospitalOfPatient: String,
          sickTimeOfPatient: String,
          pibOfDocOfPatient: String,
          rezultOfreatmentOfPatient: String,
          ripDateOfPatient: String,
          mainDiagnosisOfPatient: String,
          mkxDiagnosisOfPatient: String,
          complicationOfPatient: String,
          сoncomitantDiagnosisOfPatient: String,
          surgeryOfPatient: String,
          laparoscopicSurgeryOfPatient: String,
          nameOfSurgeryOfPatient: String,
          dateOfSurgeryOfPatient: String,
          dateOfSurgeryOfPatientForUpdate: String,
          surgeryDoctorOfPatient: String,
          firstAssistantOfPatient: String,
          secondAssistantOfPatient: String,
          beforeSurgeryOfPatient: Number,
          afterSurgeryOfPatient: Number,
          typeOfSurgeryOfPatient: String,
          sumSurgeryOfPatient: String,
          nameOfSumSurgeryOfPatient: String,
          typeOfSumSurgeryOfPatient: String,
          complicationAfterSurgeryOfPatient: String,
          typeOfComplicationOfPatient: String,
          anotherTypeOfComplicationOfPatient: String
        
        };
        
        const Patient = mongoose.model("Patient", patientsSchema);
        
        app.post("/findAll", function(req, res) {
          Patient.find({}, function(err, foundP) {
            if (!err) {
              if (foundP != null) {
        
                const ws = fs.createWriteStream("public/files/ListOfPatients.csv");
                let headers = Object.keys(Patient.schema.paths)
                  .filter(k => ['_id', '__v', 'dateOfBirthdayForUpdate', 'dateOfArrivingForSearching',
                    'dateOfArrivingForUpdate', 'dateOfBeingFreeForUpdate', 'dateOfSurgeryOfPatientForUpdate'
                  ].indexOf(k) === -1);
        
                console.log(headers);
        
                fastcsv.write(foundP, {headers}).on("finish", function() {
                  console.log("Write to ListOfPatients.csv successfully!");
                }).pipe(ws);
        
                res.render("find", {
                  foundPat: foundP
                });
                console.log(foundP);
              }
            }
          });
        
        });
        
        //------------------------------------------------------
        let port = process.env.PORT;
        if (port == null || port == "") {
          port = 3000;
        }
        app.listen(port, function() {
    console.log("Server has started successfully");
        });