function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Freitag, Hendrik', 1],
    ['Grouvelle, Antoine', 3],
    ['Hayashi, Masakazu & Kamite, Yuuki & Kobayashi, Takuya', 8],
    ['Lamine, Smail & Lounaci, Abdelkader & Bennas, Nard', 1],
    ['Litovkin, Stanislav V. & Bruvo-Mađarić, Branka', 1],
    ['PROKIN, Alexander A. & LITOVKIN, Stanislav V. & JÄCH, Manfred A.', 1],
    ['Polizei, Thiago T. S. & Fernandes, André S.', 1],
    ['Pérez-Hernández, Cisteil Xinum', 3],
    ['Shapovalov, Maksim I. & Prokin, Alexandr A. & Palatov, Dmitry M.', 2],
    ['White, David S. & Lenat, David A.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=22)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);