function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Allaire, Ninon & Rustán, Juan J. & Korn, Dieter', 1],
    ['Dernov, Vitaly', 6],
    ['Korn, Dieter', 1],
    ['Korn, Dieter & Weyer, Dieter', 99],
    ['Plummer, F. B. & Scott, G.', 1],
    ['Spath, Louis', 1],
    ['Zong, Pu & Becker, R. Thomas & Ma, Xueping', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=110)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);