function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Brady, George Stewardson', 2],
    ['De Zoysa, H. K. S. & Nguyen, Anh D. & Wickramasinghe, S.', 20],
    ['Golovatch, Sergei I. & Wesener, Thomas', 80],
    ['Hoffman, Richard L.', 1],
    ['Hollier, John & Stöckli, Eduard & Wesener, Thomas', 27],
    ['John Hollier & Edmund Schiller & Nesrine Akkari', 2],
    ['Likhitrakarn, Natdanai & Golovatch, Sergei I. & Panha, Somsak', 5],
    ['Likhitrakarn, Natdanai & Jirapatrasilp, Parin', 14],
    ['Mauriès, Jean-Paul & Golovatch, Sergei I. & Hoffman, Richard L.', 1],
    ['Pimvichai, Piyatida & Akkari, Nesrine & Semenyuk, Irina', 3],
    ['Pimvichai, Piyatida & Enghoff, Henrik & Panha, Somsak', 48],
    ['Redman, Guy T. & Hamer, Michelle L. & Barraclough, David A.', 31],
    ['Redman, Guy T. & Hamer, Michelle L. & Slotow, Robert H.', 2],
    ['Sankaran, Pradeep M. & Sebastian, Pothalil A.', 3],
    ['Vohland, Katrin & Hamer, Michelle', 7],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=247)',
    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);