function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Allen, Timothy Field', 9],
    ['Hyland, Fay', 1],
    ['Kostermans, Andre Joseph Guillaume Henri', 20],
    ['Lauterbach, Carl (Karl) Adolf Georg', 1],
    ['Munzinger, Jérôme & McPHERSON, Gordon & Bruy, David', 3],
    ['Teschner, Hans', 11],
    ['Zou, Dian-yang & Cao, Guan-long & Zhang, Jin-guo & Li, Lang', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=46)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);