function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ashton, Ruth Elizabeth', 4],
    ['Chen, Ronglian & Zhang, Faqi & Chen, Shilong & Chi, Xiaofeng', 1],
    ['Diels, Friedrich Ludwig Emil', 1],
    ['Dilmy, Anwari', 1],
    ['Gentis, Nicolas & Licht, Alexis & Boura, Anaïs', 5],
    ['Gilg, Ernest Friedrich', 1],
    ['Jarvis, Charlie', 2],
    ['Junker, Robert R. & Itioka, Takao & Bragg, Phil E.', 1],
    ['Kostermans, Andre Joseph Guillaume Henri', 1],
    ['Labiak, Paulo H.', 1],
    ['Li, Houhun & Sattler, Klaus', 1],
    ['Linnaeus, Carolus', 1],
    ['Lu, Lin & Zhang, Yalin', 2],
    ['Ranjith, A. P. & Nasser, M. & Rajmohana, K. & Quicke, D. L. J.', 2],
    ['van Slooten, D. F.', 2],
    ['Other (8)', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=34)',
    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);