function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Boano, Giovanni & Belemsobgo, Urbain & Silvano, Fabrizio', 1],
    ['Cibois, Alice & Vallotton, Laurent & Othman, Nagwa', 10],
    ['Eck, Siegfried', 31],
    ['Frahnert, Sylke & Turner, Donald A. & Bracker, Cordula', 1],
    ['Grazia, Jocélia & Campos, Luiz A.', 1],
    ['Hablizl, Karl', 1],
    ['Linnaeus, Carolus', 13],
    ['Mlíkovský, Jiří', 8],
    ['Mlíkovský, Jiří & Frahnert, Sylke', 1],
    ['Pachycephalidae & Aegithalidae & Remizidae & Paridae & Sittidae', 47]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=114)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);