function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Herhold, Hollister W & Davis, Steven R & Degrey, Samuel P', 1],
    ['Linnaeus, Carolus', 10],
    ['Müller, Otto Friedrich', 1],
    ['Poda, Nicolaus', 1],
    ['Retzius, Anders Ja ̊ han', 2],
    ['Sartori, Michel & Bauernfeind, Ernst', 3],
    ['Sroka, Pavel & Bojkova, Jindriska & Kolar, Vojtech', 1],
    ['Sun, Jun-Zhi & Luo, Juan-Yan & Zhou, Chang-Fa', 1],
    ['Ubero-Pascal, Nicolás & Puig, Angels', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=21)',
    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);