function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bellardi, Luigi', 1],
    ['Blaschke, F.', 1],
    ['Cavallari, Daniel C. & Dornellas, Ana Paula S.', 4],
    ['Dall, William Healey', 1],
    ['Hryniewicz, Krzysztof & Little, Crispin T. S.', 1],
    ['Jong, Rienk De', 1],
    ['La Perna, R.', 6],
    ['Negri, Mauro Pietro & Corselli, Cesare', 6],
    ['Okutani, Takashi & Kawamura, Reiko', 1],
    ['Ortega, José Rafael & Gofas, Serge', 2],
    ['Smith, Edgar A.', 7],
    ['Suarez-Mozo, Nancy Yolimar & Gracia, Adriana', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=36)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);