function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abdinbekova, Arifa & Huseynova, Ellada & Kerimova, Ilhama', 6],
    ['Broad, Gavin R. & Shaw, Mark R. & Godfray, H. Charles J.', 24],
    ['Hovorka, Tomáš & Macek, Jan', 1],
    ['Madl, Michael', 1],
    ['N. S & Ghahari, H. & F, Bassus & E, Camptothlipsis', 5],
    ['Plecas, Milan & Zikic, Vladimir & Kocic, Korana', 1],
    ['Sakenin Chelav, H. & Coronado-Blanco, J. M. & Samin, N.', 1],
    ['Sakenin, H. & Naderian, H. & Samin, N. & Rastegar, J.', 1],
    ['Samin, Najmeh & Ghahari, Hassan & I, Boyerahmad.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=41)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);