function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Decker, Peter & Reip, Hans Simon & Voigtlaender, Karin', 14],
    ['Dyachkov, Yurii V. & Farzalieva, Gyulli Sh. & Tuf, Ivan H.', 33],
    ['Iorio, Étienne & Zapparoli, Marzio & Ponel, Philippe', 8],
    ['K. W. Verhoeff', 40],
    ['Karl Graf Attems', 8],
    ['Kiria, Eleonora & Barjadze, Shalva & Tuf, Ivan Hadrian', 33],
    ['Korobushkin, Daniil I. & Semenyuk, Irina I. & Tuf, Ivan H.', 10],
    ['Ma, Huiqin & Pei, Sujian & Hou, Xiaojie & Zhu, Tiegang', 42],
    ['Marzio Zapparoli', 30],
    ['Nefediev, Pavel S. & Farzalieva, Gyulli Sh. & Tuf, Ivan H.', 18],
    ['Simaiakis, Stylianos Michail & Akkari, Nesrine', 15],
    ['Tran, Binh T. T. & Le, Son X. & Nguyen, Anh D.', 10],
    ['Zapparoli, Marzio', 28],
    ['Zapparoli, Marzio & Iorio, Etienne', 24],
    ['Zarei, Roghaieh & Rahimian, Hassan & Mirmonsef, Hassan', 24],
    ['Other (51)', 120]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=457)',
    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);