function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Andréfouët, Serge & Chen, Wei-Jen & Kinch, Jeff & Mana, Ralph', 7],
    ['Burgess, W. E.', 1],
    ['Ho, Hsuan-Ching & Shao, Kwang-Tsao', 1],
    ['Jordan, David Starr & Jordan, Eric Knight', 1],
    ['Klausewitz, Wolfgang', 1],
    ['Kosaki, Randall K.', 1],
    ['Lubbock, Roger & Sankey, R. D.', 1],
    ['Peter Wirtz & Carlos Eduardo L. Ferreira & Sergio R. Floeter', 1],
    ['Randall, John Ernest Dr. & Caldwell, David K.', 1],
    ['Randall, John Ernest Dr. & Wass, Richard C.', 1],
    ['Shen, Kang-Ning & Chang, Chih-Wei & Delrieu-Trottin, Erwan', 1],
    ['Shen, Kang-Ning & Ho, Hsuan-Ching & Chang, Chih-Wei', 1],
    ['Shen, Shih-Chieh', 1],
    ['Smith-Vaniz, William F. & Randall, John Ernest Dr.', 1],
    ['Woods, Loren P. & Kanazawa, R. H.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=21)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);