function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bancroft, E. N.', 1],
    ['Bariche, Michel & Fricke, Ronald', 1],
    ['Bennett, Edward Turner', 1],
    ['Bleeker, Pieter', 1],
    ['Carneiro, Miguel & Martins, Rogélia & Landi, Monica', 2],
    ['Facciolà, L.', 1],
    ['Gistel, Johannes von Nepomuk Franz Xaver', 1],
    ['Goode, G. B. & Bean, T. H.', 1],
    ['Ho, Hsuan-Ching & Smith, David G. & Mccosker, John E.', 4],
    ['Kanazawa, R. H.', 4],
    ['Lin, Chien-Hsiang & Nolf, Dirk', 3],
    ['Marcia Salustiano de Castro & Ana Cristina Teixeira Bonecker', 2],
    ['Ranzani, C.', 3],
    ['Smith, David G. & Ho, Hsuan-Ching', 7],
    ['Smith-Vaniz, William F. & Jelks, Howard L.', 2],
    ['Other (6)', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=40)',
    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);