function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Amorim, Bruno S. & Alves, Marccus', 16],
    ['Burckhardt, Daniel & Cho, Geonho & Lee, Seunghwan', 2],
    ['Chin, Yee Wei & Cassis, Gerasimos', 2],
    ['Clark, Ruth P. & Mackinder, Barbara A. & Banks, Hannah', 1],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 5],
    ['Jarvis, Charlie', 21],
    ['Jendek, Eduard & Nakládal, Oto', 14],
    ['Maslin, B. R. & Miller, J. T. & Seigler, D. S.', 5],
    ['Proença, Carolyn E. B. & De Oliveira, Marla I. U.', 4],
    ['Rota, Emilia', 5],
    ['Silva-Gonçalves, Kelly Cristina Da & Baumgratz, José Fernando A.', 8],
    ['Sobral, M. & Souza, M. C. & Mazine-Capelo, F. & Lucas, E.', 18],
    ['Thomas Borsch & Hilda Flores-Olvera & Silvia Zumaya & Kai Müller', 36],
    ['Turner, Ian M. & Utteridge, Timothy M. A.', 10],
    ['Vandenberg, Natalia J. & Hanson, Paul E.', 7],
    ['Other (6)', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=160)',
    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);