function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Chen Zhang', 2],
    ['Chyzer, C., Kulczynski, L.', 2],
    ['Dupérré, Nadine & Tapia, Elicio', 13],
    ['Jin, Chi & Zhang, Feng', 2],
    ['Kropf, C.', 4],
    ['LePeru', 7],
    ['Levi, Herbert W.', 2],
    ['Lopardo, Lara & Hormiga, Gustavo', 10],
    ['Lucien Berland', 2],
    ['Miller, Jeremy & Griswold, Charles & Yin, Chang', 3],
    ['Oj, Ryoji', 2],
    ['Ono', 3],
    ['Platnick, N. I & M. U. Shadab', 17],
    ['Yucheng Lin & Shuqiang Li', 3],
    ['Zhang, Qiqi & Lin, Yucheng', 8],
    ['Other (24)', 33]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=113)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);