function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Andreeva, Svetlana I.', 4],
    ['Anistratenko, V. V. & Furyk, Yu. I. & Anistratenko, O. Yu.', 3],
    ['Atzner', 2],
    ['Esu, Daniela & Girotti, Odoardo', 1],
    ['Frank, Christa', 1],
    ['Gloeer, Peter & Pesic, Vladimir', 8],
    ['Glöer, P. & Georgiev, D.', 2],
    ['Glöer, Peter & Bössneck, Ulrich', 6],
    ['Glöer, Peter & Shoreva, Irina & Slavevska-Stamenković, Valentina', 2],
    ['Marković, Vanja & Gojšina, Vukašin & Novaković, Boris', 2],
    ['Neubauer, Thomas A.', 1],
    ['Neubauer, Thomas A. & Harzhauser, Mathias & Kroh, Andreas', 2],
    ['Ng, Ting Hui & Jeratthitikul, Ekgachai & Sutcharit, Chirasak', 1],
    ['Odabaşı, Serpil & Odabaşı, Deniz Anil', 1],
    ['Pesic, Vladimir & Gloeer, Peter', 2],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=40)',
    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);