function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cantallo, Harold & Gomes, Nuno & Antunes, Carlos', 9],
    ['Erman, Orhan & Pešić, Vladimir & Esen, Yunus & Özkan, Muhlis', 6],
    ['Esen, Yunus & Dilkaraoğlu, Sibel & Erman, Orhan', 3],
    ['Gerecke, Reinhard & Smit, Harry', 5],
    ['Guelle, Pinar & Boyaci, Yunus Oemer', 8],
    ['Martin, Peter', 7],
    ['Pešić, Vladimir & Bańkowska, Aleksandra & Goldschmidt, Tom', 15],
    ['Pešić, Vladimir & Chatterjee, Tapas & Bordoloi, Sabitry', 3],
    ['Pešić, Vladimir & Smit, Harry & Saboori, Alireza', 5],
    ['Smit, H. & Gerecke, R.', 33],
    ['Smit, Harry', 2],
    ['Tuzovskij, Petr V.', 13],
    ['Tyukosova, Valentina & Gerecke, Reinhard & Stur, Elisabeth', 14],
    ['Wang, Jialin & Jin, Daochao & Yi, Tianci & Guo, Jianjun', 5],
    ['Wang, Yu & Jin, Daochao & Guo, Jianjun', 4],
    ['Other (8)', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=140)',
    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);