function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abotsi, Komla Elikplim & Kokou, Kouami & Dubuisson, Jean-Yves', 44],
    ['Blume, Carl Ludwig von', 5],
    ['Cabezudo, Baltasar & Solanas, Federico Casimiro-Soriguer', 12],
    ['Carmes, Amanda Angélica & Dechoum, Michele de Sá', 12],
    ['Christensen, Carl C.', 5],
    ['Cremers, Georges & Aupic, Cécile', 9],
    ['Cremers, Georges & Boudrie, Michel', 7],
    ['Fischer, Eberhard & Lobin, Wolfram', 52],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 16],
    ['Info Flora', 29],
    ['Jarvis, Charlie', 32],
    ['Konrad Lauber & Gerhart Wagner & Andreas Gygax', 16],
    ['Rosenstock, Eduard', 9],
    ['Salgado, Arthur Edward', 8],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 26],
    ['Other (39)', 72]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=354)',
    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);