function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Becherer', 35],
    ['Cabezudo, Baltasar & Solanas, Federico Casimiro-Soriguer', 25],
    ['Feuillet, Christian', 19],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 60],
    ['Info Flora', 75],
    ['Irimia, Ramona-Elena & Gottschling, Marc', 20],
    ['Jarvis, Charlie', 126],
    ['Konrad Lauber & Gerhart Wagner & Andreas Gygax', 50],
    ['Linnaeus, Carolus', 69],
    ['Madika, Lydia K. & Moteetee, Annah Ntsamaeeng', 17],
    ['Miller, James S.', 48],
    ['Molino, Jean-François & Sabatier, Daniel & Grenand, Pierre', 18],
    ['Moroni, Pablo & Martinez, Agustina & Simpson, Michael G.', 20],
    ['Reich, Dieter & Gutermann, Walter & Bardy, Katharina', 21],
    ['Rueangsawang, Kanokorn & Chantaranothai, Pranom', 15],
    ['Other (75)', 183]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=801)',
    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);