function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Delfosse, Emmanuel & Iorio, Étienne', 1],
    ['Mitov, Plamen G. & Perkovsky, Evgeny E. & Dunlop, Jason A.', 1],
    ['SCHÖNHOFER, AXEL L.', 1],
    ['Shear, William A. & Warfel, Joseph G.', 5],
    ['Trilikauskas, Laimonas A. & Azarkina, Galina N.', 2],
    ['Tsurusaki, Nobuo & Song, Da-Xiang', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=12)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);