function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cruz-López, Jesús A.', 2],
    ['Delfosse, Emmanuel & Iorio, Étienne', 7],
    ['Dunlop, Jason & Mitov, Plamen', 2],
    ['Jochen Martens', 4],
    ['Karaman, Ivo M.', 1],
    ['Martens, Jochen', 15],
    ['Martens, Jochen & Maghradze, Eter & Barjadze, Shalva', 8],
    ['Mitov, Plamen G. & Perkovsky, Evgeny E. & Dunlop, Jason A.', 3],
    ['Modebadze, Naia & Martens, Jochen & Snegovaya, Nataly', 19],
    ['Novak, Tone & Kozel, Peter', 2],
    ['SCHÖNHOFER, AXEL L.', 5],
    ['Shear, William A.', 15],
    ['Zhang, Chao & Martens, Jochen', 2],
    ['Zhang, Chao & Zhang, Feng', 4],
    ['Zhang, Feng & Zhao, Likun & Zhang, Chao', 4],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=95)',
    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);