function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Al-Khazali, Azhar Mohammed & Kachel, Hamid Saeid', 1],
    ['Alberto T. Barrion & Aimee Lynn A. Barrion-Dupo', 1],
    ['Biswas, B. & Majumder, S. C.', 8],
    ['Bosmans & Van Keer', 5],
    ['Breitling, Rainer & Bauer, Tobias', 1],
    ['D. MORITZ WAGNER', 1],
    ['Deltshev, Christo & Komnenov, Marjan & Blagoev, Gergin', 2],
    ['Duperre, Nadine & Harms, Danilo', 1],
    ['Forster, Raymond Robert', 1],
    ['Framenau, Volker W. & Baehr, Barbara C.', 1],
    ['Karsch, F.', 5],
    ['Shafaie, Sepideh & Nadolny, Anton A. & Mirshamsi, Omid', 2],
    ['Simon, Eugène', 2],
    ['Steinpress, Igor Armiach & Cohen, Mira & Pétillon, Julien', 5],
    ['Wang, Luyu & Lu, Tian & Cai, Ducheng & Barrion, Alberto Tomas', 3],
    ['Other (8)', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=47)',
    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);