function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Hui, T. Y. & Wong, Kingsley J. H.', 2],
    ['Mitra, Santanu & Trivedi, Jigneshkumar N.', 2],
    ['Murniati, Dewi Citra & Asakura, Akira & Davie, Peter J. F.', 3],
    ['Murniati, Dewi Citra & Asakura, Akira & Nugroho, Dharma Arif', 1],
    ['Naderloo, Reza & Türkay, Michael', 4],
    ['Ng, Peter K. L.', 1],
    ['Ng, Peter K. L. & Clark, Paul F. & Cuesta, Jose A.', 4],
    ['Rathbun, Mary J.', 1],
    ['Trivedi, Jigneshkumar & Soni, Gunjan & Trivedi, Dhruva', 1],
    ['Wong, Kingsley J. H. & Chan, Benny K. K. & Shih, Hsi-Te', 4],
    ['Wong, Kingsley J. H. & Shih, Hsi-Te & Chan, Benny K. K.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=25)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);