function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Golovatch, Sergei I. & Wesener, Thomas', 4],
    ['Likhitrakarn, Natdanai & Golovatch, Sergei I. & Panha, Somsak', 2],
    ['Marek, Paul E. & Hall, Charity L. & Lee, Cedric & Bailey, James', 2],
    ['Marek, Paul E. & Krejca, Jean K. & Shear, William A.', 2],
    ['Marek, Paul E. & Shear, William A. & Bond, Jason E.', 2],
    ['Moritz, Leif & Parra-Gomez, Antonio', 4],
    ['Moritz, Leif & Parra-Gómez, Antonio', 1],
    ['Wesener, Thomas', 6],
    ['Wesener, Thomas & Moritz, Leif', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=24)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);