function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Dursun, Ahmet & Fent, Meral', 10],
    ['El-Hawagry, Magdi S. & Sharaf, Mostafa R. & Al Dhafer, Hathal M.', 2],
    ['Golub, Victor B. & Luo, Zhaohui & Vinokurov, Nikolai N.', 4],
    ['Guilbert, Eric', 1],
    ['Guilbert, Eric & Pham, Hong Thai & Soulier-Perkins, Adeline', 2],
    ['Guilbert, Éric & Montemayor, Sara I.', 1],
    ['Heiss, Ernst & Eckelt, Andreas & Lederwasch, Manfred', 17],
    ['Krüger, Andreas & Deckert, Jürgen', 1],
    ['Linnavuori, Rauno E.', 1],
    ['Montemayor, I. & Linnavuori, E.', 8],
    ['Montemayor, Sara & Coscarón, María Del Carmen', 3],
    ['Norbiato, Margherita & Dioli, Paride & Cianferoni, Fabio', 1],
    ['TASZAKOWSK, Artur & PASIŃSKA, Agnieszka', 1],
    ['Vinokurov, Nikolay N. & Rudoi, Valentin V.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=54)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);