function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bidzilya, Oleksiy & Karsholt, Ole & Kravchenko, Vasiliy', 2],
    ['Bidzilya, Oleksiy V. & Budashkin, Yury I.', 2],
    ['Huemer, Peter', 1],
    ['Huemer, Peter & Karsholt, Ole', 85],
    ['Huemer, Peter & Karsholt, Ole & Wieser, Christian', 1],
    ['Huemer, Peter & Van Nieukerken, Erik J.', 1],
    ['Junnilainen, Jari & Karsholt, Ole & Nupponen, Kari', 12],
    ['Junnilainen, Jari & Nupponen, Kari', 6],
    ['Karsholt, Ole & Huemer, Peter', 1],
    ['Li, Houhun & Sattler, Klaus', 1],
    ['Meyrick, Edward', 1],
    ['Timossi, Giovanni & Huemer, Peter', 2],
    ['Šumpich, Jan', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=122)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);