function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Araya, Juan Francisco', 2],
    ['Dall, William Healey', 1],
    ['Frank, Christa', 11],
    ['Gould, A. A.', 1],
    ['Harzhauser, Mathias & Neubauer, Thomas A.', 1],
    ['Harzhauser, Mathias & Neubauer, Thomas A. & Gross, Martin', 1],
    ['Horsák, Michal & Pokryszko, Beata M.', 1],
    ['Hutterer, Rainer & Groh, Klaus', 4],
    ['Inkhavilay, Khamla & Sutcharit, Chirasak & Bantaowong, Ueangfa', 12],
    ['Marzuki, Mohammad Effendi bin & Liew, Thor-Seng', 1],
    ['Muratov, Igor V.', 8],
    ['Nordsieck, Hartmut', 3],
    ['Pease, W. H.', 5],
    ['Phung, Chee-Chean & Yu, Fred Tuh Yit & Liew, Thor-Seng', 5],
    ['Vavrová, Ľ. & Šteffek, J.', 3],
    ['Other (3)', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=62)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);