function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Anker, Arthur & Pachelle, Paulo P. G. & Tavares, Marcos', 2],
    ['Ashrafi, Hossein & Dehghani, Amir & Sari, Alireza', 2],
    ['Bruce, A. J.', 40],
    ['Eilbracht, Joni & Fransen, Charles H. J. M.', 2],
    ['Filho, Petrônio Alves Coelho', 3],
    ['Fransen, Charles H. J. M.', 15],
    ['Grave, De', 2],
    ['Holthuis, Lipke Bijdeley', 2],
    ['Li, Xinzheng', 8],
    ['Li, Xinzheng & Bruce, Alexander J.', 38],
    ['Li, Xinzheng & Cleva, Régis & Poupin, Joseph', 2],
    ['Martin, Joel W. & Haney, Todd A.', 2],
    ['Okuno, Junji', 2],
    ['Vieira, Rony R. R. & Ferreira, Rodrigo S. & D’Incao, Fernando', 5],
    ['Ďuriš, Zdeněk', 8],
    ['Other (11)', 12]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=145)',
    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);