function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Akaike, Takahiro & Chungthanawong, Sirikanya', 1],
    ['Alexander, Timothy & Seehausen, Ole', 2],
    ['Andréfouët, Serge & Chen, Wei-Jen & Kinch, Jeff & Mana, Ralph', 1],
    ['Arai, Hisao P. & Smith, John W.', 2],
    ['Ayres, W. O.', 2],
    ['Carneiro, Miguel & Martins, Rogélia & Landi, Monica', 2],
    ['Eagderi, Soheil & Mouludi-Saleh, Atta & Esmaeili, Hamid Reza', 2],
    ['Gill, T. N.', 2],
    ['Laan, Richard Van Der & Eschmeyer, William N. & Fricke, Ronald', 5],
    ['Linnaeus, Carolus', 16],
    ['Love, Milton S. & Bizzarro, Joseph J. & Cornthwaite, Maria', 3],
    ['Sauvage, H. E.', 4],
    ['Sayyadzadeh, Golnaz & Esmaeili, Hamid Reza', 2],
    ['Simian, Gaëlle & Abraham, Daniel & Bailly, Nicolas', 3],
    ['Steindachner, F.', 2],
    ['Other (32)', 32]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=81)',
    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);