function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Deeleman-Reinhold, Christa', 4],
    ['Haddad, Charles R. & Jin, Chi & Platnick, Norman I.', 8],
    ['Piñanez Espejo, Yolanda M. G. & Munévar, Ana & Kochalka, John A.', 2],
    ['Saaristo, Michael I.', 1],
    ['Tso, I-Min & Zhu, Ming-Sheng & Zhang, Jun-Xia & Zhang, Feng', 2],
    ['Zhang, Mengzhen & Ma, Ning & Jiang, Zimin & Xiao, Yonghong', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=18)',
    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);