function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Blake, Joseph (Rev.)', 1],
    ['Chen, Ronglian & Zhang, Faqi & Chen, Shilong & Chi, Xiaofeng', 3],
    ['DeFilipps, Robert A. & Krupnick, Gary A.', 1],
    ['Engler, Heinrich Gustav Adolf', 1],
    ['Foreman, Donald Bruce', 2],
    ['Govind, Murugan Govindakurup & Dan, Mathew', 3],
    ['Kottaimuthu, Ramalingam', 1],
    ['Lin, Yun & Bi, Hai-Yan & Sun, Jun & Sun, Qian', 2],
    ['Markgraf, Friedrich', 7],
    ['Molino, Jean-François & Sabatier, Daniel & Grenand, Pierre', 11],
    ['Santamaria-Aguilar, Daniel & Aguilar, Reinaldo', 14],
    ['Santamaria-Aguilar, Daniel & Lagomarsino, Laura P.', 14],
    ['Sinclair, John', 16],
    ['Smith, Albert Charles', 14],
    ['de Wilde, Willem Jan Jacobus Oswald', 58],
    ['Other (5)', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=153)',
    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);