function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Gilasian, Ebrahim & Vujić, Ante & Hauser, Martin', 6],
    ['Heimburg, Helge & Doczkal, Dieter & Holzinger, Werner E.', 6],
    ['Hurkmans, Willem', 28],
    ['Kočić, Anja & Vujić, Ante & Tot, Tamara', 19],
    ['Meigen, Johann Wilhelm', 15],
    ['Ricarte, Antonio & Nedeljković, Zorica & Rotheray, Graham E.', 14],
    ['Ricarte, Antonio & Rotheray, Graham E. & Lyszkowski, Richard M.', 5],
    ['Sack, Pius', 9],
    ['Sforzi, Alessandra & Sommaggio, Daniele', 15],
    ['Veselić, Sanja & Vujić, Ante & Radenković, Snežana', 9],
    ['Vujic, Ante & Likov, Laura & Radenkovic, Snezana', 14],
    ['Vujic, Ante & Radenkovic, Snezana & Barkalov, Anatolij', 13],
    ['Vujić, Ante & Radenković, Snežana & Ačanski, Jelena', 11],
    ['Vujić, Ante & Radenković, Snežana & Tubić, Nataša Kočiš', 9],
    ['Vujić, Ante & Radenković, Snežana & Zorić, Ljiljana Šašić', 9],
    ['Other (24)', 49]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=231)',
    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);