function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bribiesca-Contreras, Guadalupe & Dahlgren, Thomas G.', 1],
    ['Clark, Roger N. & Jewett, Stephen C.', 2],
    ['Cunha, Rosana & Martins, Luciana & Menegola, Carla', 2],
    ['De Loriol, P.', 1],
    ['Despalatović, Marija & Cvitković, Ivan & Žuljević, Ante', 1],
    ['Ellis, John & Solander, Daniel Carl', 1],
    ['Fassbender, Nico & Stefanoudis, Paris V', 5],
    ['Gray, John Edward', 3],
    ['Jangoux, Michel', 72],
    ['Linnaeus, Carolus', 13],
    ['Madeira, Patrícia & Kroh, Andreas & Cordeiro, Ricardo', 9],
    ['Mah, Christopher', 46],
    ['Mah, Christopher & Foltz, David', 8],
    ['Mah, Christopher L.', 11],
    ['Rousseau, Julie & Gale, Andrew Scott & Thuy, Ben', 2],
    ['Other (4)', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=181)',
    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);