function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bariche, Michel & Fricke, Ronald', 2],
    ['Carneiro, Miguel & Martins, Rogélia & Landi, Monica', 3],
    ['Fricke, Ronald', 1],
    ['Gon, Ofer', 2],
    ['Goode, G. B. & Bean, T. H.', 1],
    ['McCosker, John E. & Long, Douglas J.', 1],
    ['Okamoto, Makoto', 7],
    ['Okamoto, Makoto & Chen, Wei-Jen & Shinohara, Gento', 3],
    ['Okamoto, Makoto & Gon, Ofer', 16],
    ['Okamoto, Makoto & Motomura, Hiroyuki', 1],
    ['Okamoto, Makoto & Nakayama, Naohide', 1],
    ['Parin, Nik V. & Abramov, A. A.', 5],
    ['Peter Wirtz & Carlos Eduardo L. Ferreira & Sergio R. Floeter', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=44)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);