text: import React from 'react';
  import Welcome from './components/Welcome';
  import Info from './components/Info';
  import PatientForm from './components/PatientForm';
  import Anp from './components/Anp';
  import { createStackNavigator, createAppContainer } from 'react-navigation';
  
  const AppNavigatior = createStackNavigator({
    Home: {screen: Welcome},
    Info: {screen: Info},
    PatientForm: {screen: PatientForm},
    Anp: {screen: Anp}
  });
  
  const App = createAppContainer(AppNavigatior);
  
  export default App;