function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abdel-Dayem, Mahmoud S. & Fad, Hassan H. & El-Torkey, Ashraf M.', 3],
    ['Arzanov, Yu. G. & Martynov, V. V. & Nikulina, T. V.', 18],
    ['Báborská, Zuzana & Skuhrovec, Jiří & Košťál, Michael', 1],
    ['Caldara, Roberto & Aguín-Pombo, Dora', 2],
    ['Colonnelli, Enzo', 1],
    ['Colonnelli, Enzo & Osella, Giuseppe', 1],
    ['Douglas, Hume & Bouchard, Patrice & Anderson, Robert S.', 1],
    ['Germann, Christoph', 1],
    ['Ghahari, H. & A. A & Y. G', 6],
    ['Jiang, Chunyan & Caldara, Roberto & Zhang, Runzhi', 56],
    ['Skuhrovec, Jiří & Gosik, Rafał & Caldara, Roberto', 17],
    ['Telfer, Angela C & Young, Monica R & Quinn, Jenna & Perez, Kate', 1],
    ['Weill, Patrick & Caldara, Roberto', 1],
    ['Yunakov, Nikolai & Nazarenko, Vitalij & Filimonov, Rostislav', 34]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=143)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);