function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ain & Šundić, Miloje', 4],
    ['Felska, Magdalena & Mąkol, Joanna', 2],
    ['Haarder, Simon & Mąkol, Joanna', 1],
    ['K, Najmeh Kiany & SeiedyK, Marjan & HakimitabarK, Masoud', 1],
    ['Karakurt, İbrahim & Sevsay, Sevgi & Buğa, Evren', 4],
    ['Kohansal, Mahnaz & Ramroodi, Sara & Noei, Javad', 2],
    ['Kontschán, Jenő & Hornok, Sándor', 1],
    ['LIU, DONG & YI, TIAN-CI & XU, YUN & ZHANG, ZHI-QIANG', 3],
    ['Luxton, Malcolm', 3],
    ['Mąkol, Joanna & Łaydanowicz, Joanna', 47],
    ['Saberi-Riseh, Nasir & Saboori, Alireza & Asadi, Mahdieh', 2],
    ['Saboori, Alireza & Shirvani, Zeinab', 12],
    ['Seeman, Owen D. & Palmer, Christopher M.', 3],
    ['Sevsay, Sevgi & Karakurt, İbrahim', 4],
    ['Stalstedt, Jeanette & Laydanowicz, Joanna & Lehtinen, Pekka T', 28],
    ['Other (3)', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=120)',
    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);