function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Becherer', 2],
    ['Breteler, F. J.', 7],
    ['Cabezudo, Baltasar & Solanas, Federico Casimiro-Soriguer', 1],
    ['DeFilipps, Robert A. & Krupnick, Gary A.', 2],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 4],
    ['Info Flora', 3],
    ['Jarvis, Charlie', 9],
    ['Konrad Lauber & Gerhart Wagner & Andreas Gygax', 3],
    ['Lingelsheim, Alexander von', 4],
    ['Linnaeus, Carolus', 5],
    ['Mille, Christian & Henderson, Rosa C. & Cazères, Sylvie', 2],
    ['Monteiro, Francisca & Costa, Esperança Da & Kissanga, Raquel', 3],
    ['Quang, Bui Hong & Choudhary, Ritesh Kumar & Lee, Joongku', 9],
    ['Turner, Ian M.', 2],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 3],
    ['Other (7)', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=66)',
    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);