function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ahmad, J.', 1],
    ['Appolloni, Massimo & Smriglio, Carlo & Amati, Bruno', 21],
    ['Cavallari, Daniel C. & Simone, Luiz R. L.', 2],
    ['Gloeer, Peter & Pesic, Vladimir', 7],
    ['Hansen, Thomas', 2],
    ['Harzhauser, Mathias', 161],
    ['Helwerda, Renate Ariane & Wesselingh, Frank Pieter', 5],
    ['Herbert, David G.', 26],
    ['Kaim, Andrzej & Jenkins, Robert G. & Tanabe, Kazushige', 3],
    ['Luca, Javier Di & Zelaya, Diego G.', 12],
    ['Martín-González, Esther & Vera-Peláez, José Luis', 10],
    ['Muratov, Igor V. & Heyns-Veale, Elodie', 21],
    ['Nakrem, Hans Arne', 4],
    ['Symonds, Malcolm Francis & Pacaud, Jean-Michel', 2],
    ['Zhang, Shuqian & Zhang, Suping', 2],
    ['Other (8)', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=287)',
    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);