function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Erman, Orhan & Pešić, Vladimir & Esen, Yunus & Özkan, Muhlis', 10],
    ['Gerecke, Reinhard', 16],
    ['Goldschmidt, Tom & Nishikawa, Kanto & Hiruta, Shimpei F.', 10],
    ['K, Harry Smit & Pešić, Vladimir & K & K, Simon Clavier', 4],
    ['Martin, Peter', 4],
    ['Matsumoto, Noriko & Dick, Matthew H. & Mawatari, Shunsuke F.', 9],
    ['Pesic, Vladimir & Yam, Rita S. W. & Chan, Benny K. K.', 3],
    ['Pešić, Vladimir', 6],
    ['Pešić, Vladimir & Bańkowska, Aleksandra & Goldschmidt, Tom', 7],
    ['Pešić, Vladimir & Chatterjee, Tapas & Bordoloi, Sabitry', 7],
    ['Pešić, Vladimir & Smit, Harry & Saboori, Alireza', 7],
    ['Smit, H. & Gerecke, R.', 8],
    ['Smit, Harry', 26],
    ['Smit, Harry & Pešić, Vladimir', 4],
    ['Tuzovskij, Petr V.', 9],
    ['Other (23)', 32]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=162)',
    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);