function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Angel, Martin V.', 11],
    ['Brandão, Simone N. & Saeedi, Hanieh & Brandt, Angelika', 13],
    ['Chavtur, Vladimir G. & Angel, Martin V.', 15],
    ['Chavtur, Vladimir G. & Bashmanov, Alexander G.', 26],
    ['Chavtur, Vladimir Grygorjevich', 5],
    ['Chitnarin, Anisong & Crasquin, Sylvie & Forel, Marie-Béatrice', 5],
    ['Forel, Marie-Béatrice & Grădinaru, Eugen', 8],
    ['Graves, Carol', 10],
    ['Karanovic, Ivana & Brandão, Simone Nunes', 6],
    ['Kornicker, Louis S. & Harrison-Nelson, Elizabeth', 4],
    ['Kornicker, Louis S. & Iliffe, Thomas M.', 35],
    ['Kornicker, Louis S. & Van, Barry W. M. & Bakel', 5],
    ['Stępień, A. & Błachowiak-Samołyk, K. & Krawczuk, M.', 6],
    ['Tanaka, Hayato & Tsukagoshi, Akira', 10],
    ['Tanaka, Hayato & Tsukagoshi, Akira & Karanovic, Ivana', 5],
    ['Other (21)', 36]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=200)',
    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);