function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Dean, David Allen', 7],
    ['Decae, Arthur & Mammola, Stefano & Rizzo, Pierluigi', 1],
    ['Dupérré, Nadine & Tapia, Elicio', 2],
    ['Echeverri, Mariana & Gomez Torres, Sebastian & Pinel, Nicolas', 1],
    ['Godwin, Rebecca L. & Bond, Jason E.', 48],
    ['Santos, Gabriel De Los & Ortiz, David & Sánchez-Ruiz, Alexander', 1],
    ['Tso, I-Min & Haupt, Joachim & Zhu, Ming-Sheng', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=63)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);