function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Borges, Paulo A. V. & Gaspar, Clara', 4],
    ['De Jong, Grant D.', 5],
    ['Eusébio, Rita & Sendra, Alberto & Enghoff, Henrik', 5],
    ['Herhold, Hollister W & Davis, Steven R & Degrey, Samuel P', 1],
    ['Kaplin, V. G.', 10],
    ['Kaplin, V. G. & Kiseleva, L. V. & Kozhevnikova, O. P.', 3],
    ['Kaplin, V. G. & Martynov, V. V.', 2],
    ['Kaplin, Vladimir', 8],
    ['Kaplin, Vladimir & I-Vi', 1],
    ['Kaplin, Vladimir & Martynov, Vladimir', 1],
    ['Kaplin, Vladimir & Shakula, Georgiy', 4],
    ['Kaplin, Vladimir & Vargovitsh, Robert S.', 2],
    ['Roca, Carmen Bach De & Gaju-Ricart, Miguel', 2],
    ['Song, Zhi-Shun & Mendes, Luis F. & Huang, Fu-Sheng', 2],
    ['Zhang, Jiayong & Zhou, Kaiya', 5],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=57)',
    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);