function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Albano, Paolo G. & Bakker, Piet A. J. & Janssen, Ronald', 1],
    ['Appolloni, Massimo & Smriglio, Carlo & Amati, Bruno', 7],
    ['Calzada, Sebastián & Forner, Enric', 1],
    ['Ferrari, Mariel', 1],
    ['Frýda, Jiří', 1],
    ['Geiger, Daniel L. & Jansen, Patty', 12],
    ['Hansen, Thomas', 14],
    ['Herbert, David G.', 2],
    ['Kaim, Andrzej & Jenkins, Robert G. & Tanabe, Kazushige', 1],
    ['Ketwetsuriya, Chatchalerm & Karapunar, Baran', 2],
    ['Luca, Javier Di & Zelaya, Diego G.', 6],
    ['Moore, Charles', 6],
    ['Pacaud, Jean-Michel', 3],
    ['Vilvens, Claude & Williams, Suzanne T. & Herbert, David G.', 10],
    ['Yoo, E. K.', 13],
    ['Other (1)', 1]
  ]);
  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);