function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bhattacharjee, Banani & Chakrovorty, Arnob & Háva, Jiří', 1],
    ['De, G.', 16],
    ['Fauvel, Charles Adolphe Albert', 1],
    ['He, Liang & Huang, Tian & Schillhammer, Harald', 3],
    ['Hu, Fang-Shuo', 1],
    ['Rougemont, G. de', 1],
    ['SMETANA, ALEŠ & DAVIES, ANTHONY', 3],
    ['Yang, Zhuo & Zhou, Hong-Zhang', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=32)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);