function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alf, Axel & Stratmann, Dirk', 1],
    ['Cavallari, Daniel C. & Dornellas, Ana Paula S.', 1],
    ['Cavallari, Daniel C. & Salvador, Rodrigo B.', 7],
    ['Cavallari, Daniel C. & Simone, Luiz R. L.', 2],
    ['Helwerda, Renate Ariane & Wesselingh, Frank Pieter', 3],
    ['Herbert, David G.', 11],
    ['Hoffman, Leon & Beuck, Lydia & Heugten, Bart Van', 4],
    ['Huang, Shih-I & Fu, I-Feng', 3],
    ['Kiel, Steffen & Sami, Marco & Taviani, Marco', 3],
    ['Luca, Javier Di & Zelaya, Diego G.', 2],
    ['Poppe, Guido', 3],
    ['Poppe, Guido & Tagaro, Sheila & Dekker, Henk', 6],
    ['Poppe, Guido & Tagaro, Sheila & Goto, Yoshihiro', 2],
    ['Poppe, Guido & Tagaro, Sheila & Vilvens, Claude', 3],
    ['Rosenfeld, Sebastian & Aldea, Cristian & Mansilla, Andres', 2],
    ['Other (6)', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=59)',
    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);