function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cosel, Rudo Von & Olu, Karine', 3],
    ['Janssen, Ronald & Krylova, Elena M.', 1],
    ['Kiel, Steffen & Sami, Marco & Taviani, Marco', 4],
    ['Krylova, Elena M. & Cosel, Rudo Von', 3],
    ['Krylova, Elena M. & Janssen, Ronald', 2],
    ['Krylova, Elena M. & Sahling, Heiko', 4],
    ['Krylova, Elena M. & Sahling, Heiko & Borowski, C.', 1],
    ['Krylova, Elena M. & Sellanes, Javier & Valdés, Francisco', 3],
    ['Olive, Graham & Rodrigues, Clara F. & Cunha, Marina R.', 3],
    ['Oliver, P. Graham & Rodrigues, Clara F. & Cunha, Marina R.', 1],
    ['Saether, Kristian P. & Jingeng, Sha & Little, Crispin T. S.', 2],
    ['Suarez-Mozo, Nancy Yolimar & Gracia, Adriana', 2],
    ['Wiklund, Helena & Taylor, John D. & Dahlgren, Thomas G.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=30)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);