function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Boddaert, Pieter', 1],
    ['Frahnert, Sylke & Turner, Donald A. & Bracker, Cordula', 2],
    ['Kumar Arya, Sumit & Gopi, Govindan Veeraswami', 1],
    ['Lichtenstein, Martin Heinrich Karl', 1],
    ['Linnaeus, Carolus', 14],
    ['Ljungh, Sven Ingemar', 1],
    ['Mlíkovský, Jiří & Frahnert, Sylke', 2],
    ['Temminck, Coenraad Jacob', 3],
    ['Vieillot, Louis Pierre', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=26)',
    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);