function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ardenghi, Nicola M. G. & Signorini, Maria Adele', 7],
    ['Becherer', 14],
    ['Cabezudo, Baltasar & Solanas, Federico Casimiro-Soriguer', 12],
    ['Desjardins, Émilie & Lai, Sandra & Payette, Serge & Dubé, Martin', 4],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 31],
    ['Info Flora', 71],
    ['Jarvis, Charlie', 11],
    ['Konrad Lauber & Gerhart Wagner & Andreas Gygax', 18],
    ['Lee, Jong-Won & Yun, Ho-Geun & Hwang, Tae Young & Kim, Kyungmin', 4],
    ['Linnaeus, Carolus', 11],
    ['Melzer, H. & Barta, Th.', 4],
    ['Prunera-Olivé, Joan & Vorontsova, Maria S. & Williams, Emma V.', 7],
    ['Reich, Dieter & Gutermann, Walter & Bardy, Katharina', 6],
    ['Sylvester, Steven P. & Soreng, Robert J.', 5],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 7],
    ['Other (17)', 28]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=240)',
    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);