function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Benson, W. H.', 1],
    ['Gittenberger, Edmund & Leda, Pema & Sherub, Sherub', 3],
    ['Inkhavilay, Khamla & Sutcharit, Chirasak & Bantaowong, Ueangfa', 5],
    ['Möllendorff, Otto F. von', 1],
    ['Pall-Gergely, Barna & Asami, Takahiro', 4],
    ['Pall-Gergely, Barna & Budha, Prem B. & Naggs, Fred', 26],
    ['Pall-Gergely, Barna & Hunyadi, Andras & Ablett, Jonathan', 23],
    ['Pall-Gergely, Barna & Muratov, Igor V. & Asami, Takahiro', 8],
    ['Páll-Gergely, Barna', 59],
    ['Páll-Gergely, Barna & Hunyadi, András', 21]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=151)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);