function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Barragán, Yamaly & Sánchez, Carlos & Rodríguez, Estefanía', 6],
    ['Crowther, Andrea L. & Fautin, Daphne G. & Wallace, Carden C.', 2],
    ['Daly, Marymegan & Fautin, Daphne G.', 1],
    ['Ellis, John', 2],
    ['Ellis, John & Solander, Daniel Carl', 1],
    ['Gonzalez-Munoz, Ricardo & Simoes, Nuno & Tello-Musi, Jose Luis', 4],
    ['Gonzalez-Muñoz, Ricardo & Simões, Nuno', 3],
    ['Gusmão, Luciana C. & Rodríguez, Estefanía', 3],
    ['Hertwig, Richard', 5],
    ['Moseley, Henry Nottidge', 2],
    ['Müller, Otto Friedrich', 6],
    ['Rodríguez, Estefanía & López-González, Pablo J.', 5],
    ['Sanamyan, N. P. & Sanamyan, K. E.', 3],
    ['Schejter, L. & Genzano, G. & Pérez, C. D. & Acuña, F.', 3],
    ['Vassallo-Avalos, Aurora & González-Muñoz, Ricardo', 9],
    ['Other (11)', 11]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=66)',
    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);