function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Andréfouët, Serge & Chen, Wei-Jen & Kinch, Jeff & Mana, Ralph', 1],
    ['Bleeker, Pieter', 1],
    ['De Vis, Charles Walter', 2],
    ['Harold, Antony S. & Winterbottom, Richard', 2],
    ['Herler, Juergen & Bogorodsky, Sergey V. & Suzuki, Toshiyuki', 5],
    ['Herre, Albert W. C. T.', 1],
    ['Kossmann, R. & Räuber, H.', 1],
    ['Playfair, R. L. & Günther, Albert Charles Lewis Gotthilf', 1],
    ['Sauvage, H. E.', 2],
    ['Sawada, Yoshihiro & Arai, R. & Abe, Tokiharu', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=17)',
    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);