function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Danylyk, Ivan M. & Koopman, Jacob', 1],
    ['Droissart, Vincent & Sonké, Bonaventure & Lowry Ii, Porter P.', 1],
    ['Hermans, Johan & Rajaovelona, Landy & Cribb, Phillip', 1],
    ['Ormerod, Paul & Kurzweil, Hubert & Watthana, Santi', 1],
    ['Peraza-Flores, Lizandro N. & Carnevali, Germán', 1],
    ['Stévart, Tariq & Nguema, Norberto', 1],
    ['Vega, Hermes & Cetzal-Ix, William & Mó, Edgar', 3],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=15)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);