function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Begha, Bruno Piotrovski & Santos, Mateus Henrique', 2],
    ['Bento, Matheus & Jameson, Mary Liz & Seidel, Matthias', 7],
    ['Hielkema, Auke J. & Hielkema, Meindert A.', 22],
    ['Medeiros, Rone A. F. & Frazão, Carlos A. V.', 1],
    ['Moore, Matthew Robert & Jameson, Mary Liz & Paucar-Cabrera, Aura', 12],
    ['Paucar-Cabrera, Aura', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=48)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);