function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Gonza ́ Lez-Acun, Daniel A. & Palma, Ricardo L.', 1],
    ['Horsfield, Thomas', 6],
    ['Jansen, Justin J. F. J.', 1],
    ['Kumar Arya, Sumit & Gopi, Govindan Veeraswami', 1],
    ['Linnaeus, Carolus', 12],
    ['Müller, Philipp Ludwig Statius', 1],
    ['Paperna, Ilan & Keong, Malcolm Soh Chu & May, Charlotte Yap Aye', 2],
    ['Robb, Magnus S. & van den Berg, Arnoud B. & Constantine, Mark', 1],
    ['Temminck, Coenraad Jacob', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=32)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);