function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Arrigoni, Roberto & Stolarski, Jarosław & Terraneo, Tullia I.', 1],
    ['Baron-Szabo, Rosemarie C.', 18],
    ['Chaix, Christian & Martin, Jean-Paul Saint', 1],
    ['Fassbender, Nico & Stefanoudis, Paris V', 4],
    ['Hoeksema, Bert W.', 1],
    ['Lamarck, J. B. P. A. de M. de', 2],
    ['Licuanan, Wilfredo Y. & Aliño, Porfirio M.', 1],
    ['Loeser, Hannes & Werner, Winfried & Darga, Robert', 4],
    ['Löser, Hannes', 4],
    ['Pillai, C. S. Gopinadha & Scheer, Georg', 1],
    ['Samiei, Jahangir Vajed & Dab, Koosha & Ghezellou, Parviz', 5],
    ['Scheer, Georg & Pillai, C. S. Gopinadha', 1],
    ['Terraneo, Tullia I. & Berumen, Michael L. & Arrigoni, Roberto', 4],
    ['Vaughan, T. W.', 2],
    ['Yabe, Hisakatsu & Sugiyama, Toshio', 2],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=53)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);