function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Biswas & Raychaudhuri', 2],
    ['Dean, David Allen', 4],
    ['Kim, Byung-Woo & Lee, Woncheol', 2],
    ['Leister, Matthew & Miller, Kelly B.', 3],
    ['Marusik, Yuri M. & Fomichev, Alexander A.', 1],
    ['Marusik, Yuri M. & Koponen, Seppo', 1],
    ['Naumova, Maria & Blagoev, Gergin & Deltshev, Christo', 1],
    ['Reboleira, Ana Sofia P. S. & Pérez, Antonio José', 1],
    ['Rivera-Quiroz, F. Andrés & Alvarez-Padilla, Fernando', 3],
    ['Wang, Lu-Yu & Zhang, Feng & Zhang, Zhi-Sheng', 2],
    ['ZONSTEIN, SERGEI & MARUSIK, YURI M.', 1],
    ['Zhang, Feng', 7],
    ['Zhang, Feng & Fu, Jian-Ying & Zhu, Ming-Sheng', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=36)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);