function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Anlaş, S.', 3],
    ['Anlaş, S. & A. F', 1],
    ['Asenjo, Angélico & e, Sistemática & de, Bioecologia & Coleoptera', 1],
    ['Assing, V.', 1],
    ['Assing, Volker', 25],
    ['Assing, Volker & Schülke, Michael & Brachat, Volker', 2],
    ['Cheng, Zhi-Fei & Peng, Zhong', 7],
    ['Ghahari, H. & Anlaş, S. & Sakenin, H. & Ostovan, H. & Tabari, M.', 2],
    ['Ghahari, H. & Hayat, R. & Tabari, M. & Ostovan, H. & Imani, S.', 2],
    ['Li, Qi-Li & Li, Li-Zhen & Gu, Fuang-Kang & Peng, Zhong', 13],
    ['Li, Xiao-Yan & Solodovnikov, Alexey & Zhou, Hong-Zhang', 6],
    ['Li, Xiao-Yan & Zhou, Hong-Zhang', 8],
    ['Navarrete-Heredia, José Luis & Gómez-Rodríguez, Cecilia', 8],
    ['Peng, Zhong & Li, Li-Zhen & Zhao, Mei-Jun', 9],
    ['Peng, Zhong & Li, Qi-Li & Li, Li-Zhen & Gu, Fu-Kang', 5],
    ['Other (7)', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=100)',
    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);