function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Asenjo, Angélico & e, Sistemática & de, Bioecologia & Coleoptera', 1],
    ['Barševskis, Arvīds & Janovska, Marina & Aksjuta, Kristīna', 1],
    ['Glotov, Sergii V. & Drogvalenko, Oleksandr M.', 1],
    ['He, Wen-Jia & Tang, Liang & Li, Li-Zhen', 4],
    ['Ivan Löbl & Ryo Ogawa', 3],
    ['Li, Xiao-Yan & Chen, Hai-Feng & Lü, Liang', 3],
    ['Löbl, Ivan', 6],
    ['Navarrete-Heredia, José Luis & Gómez-Rodríguez, Cecilia', 1],
    ['Ogawa, Ryo & Matsuo, Susumu & Hoshina, Hideto & Maeto, Kaoru', 1],
    ['Pic, Maurice', 2],
    ['Tang, Liang & Li, Li-Zhen', 10],
    ['Tang, Liang & Li, Li-Zhen & He, Wen-Jia', 21],
    ['Tang, Liang & Tu, Yue-Ye & Li, Li-Zhen', 2],
    ['Telfer, Angela C & Young, Monica R & Quinn, Jenna & Perez, Kate', 1],
    ['Tu, Yue-Ye & Tang, Liang', 3],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=61)',
    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);