function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['C. Attems', 16],
    ['Decker, Peter & Reip, Hans Simon & Voigtlaender, Karin', 16],
    ['Dyachkov, Yurii V. & Farzalieva, Gyulli Sh. & Tuf, Ivan H.', 64],
    ['Edgecombe, Gregory D.', 17],
    ['K. W. Verhoeff', 41],
    ['Kiria, Eleonora & Barjadze, Shalva & Tuf, Ivan Hadrian', 57],
    ['Ma, Huiqin & Pei, Sujian & Hou, Xiaojie & Zhu, Tiegang', 70],
    ['Marzio Zapparoli', 38],
    ['Nefediev, Pavel S. & Farzalieva, Gyulli Sh. & Tuf, Ivan H.', 28],
    ['Shear, William A.', 29],
    ['Simaiakis, Stylianos Michail & Akkari, Nesrine', 20],
    ['Tran, Binh T. T. & Le, Son X. & Nguyen, Anh D.', 21],
    ['Zapparoli, Marzio', 33],
    ['Zapparoli, Marzio & Iorio, Etienne', 26],
    ['Zarei, Roghaieh & Rahimian, Hassan & Mirmonsef, Hassan', 27],
    ['Other (100)', 336]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=839)',
    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);