function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ale-Rocha, Rosaly', 6],
    ['Ale-Rocha, Rosaly & Pollet, Marc', 3],
    ['EVENHUIS, NEAL L. & PONT, ADRIAN C.', 1],
    ['Ibáñez-Bernal, Sergio & Hernández-Ortiz, Vicente', 4],
    ['Kirst, Frederico Dutra & Ale-Rocha, Rosaly', 10],
    ['Wiedemann, Christian Rudolph Wilhelm', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=25)',
    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);