function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Andréfouët, Serge & Chen, Wei-Jen & Kinch, Jeff & Mana, Ralph', 5],
    ['Bennett, Edward Turner', 1],
    ['Bleeker, Pieter', 8],
    ['Cartier, O.', 1],
    ['Du, Jianguo & Loh, Kar-Hoe & Hu, Wenjia & Zheng, Xinqing', 4],
    ['Golani, Daniel & Bogorodsky, Sergey V.', 1],
    ['Günther, Albert Charles Lewis Gotthilf', 1],
    ['Jenkins, O. P.', 1],
    ['Nichols, J. T.', 1],
    ['Playfair, R. L. & Günther, Albert Charles Lewis Gotthilf', 1],
    ['Rüppell, Wilhem Peter Eduard Simon', 3],
    ['Seale, A.', 1],
    ['Steindachner, F.', 1],
    ['de Laporte Castelnau La Ferté-Sénectère, Francis L.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=30)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);