function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Appolloni, Massimo & Smriglio, Carlo & Amati, Bruno', 2],
    ['Blake, Joseph (Rev.)', 1],
    ['Conrad, Timothy Abbot', 1],
    ['Dall, William Healey', 1],
    ['Forner, Enric', 1],
    ['Hryniewicz, Krzysztof & Amano, Kazutaka', 2],
    ['Kaim, Andrzej & Jenkins, Robert G. & Tanabe, Kazushige', 2],
    ['Kiel, Steffen & Sami, Marco & Taviani, Marco', 2],
    ['Makiyama, Jirô', 1],
    ['Negri, Mauro Pietro & Corselli, Cesare', 1],
    ['Raines, Bret & Huber, Markus', 2],
    ['Smith, Edgar A.', 5],
    ['Sowerby, James DeCarle', 4],
    ['Suarez-Mozo, Nancy Yolimar & Gracia, Adriana', 1],
    ['Wiklund, Helena & Taylor, John D. & Dahlgren, Thomas G.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=27)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);