function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ain & Šundić, Miloje', 1],
    ['Ebrahimi, Najmeh & Noei, Javad', 4],
    ['HAITLINGER, Ryszrd & ŠUNDIĆ, Miloje', 6],
    ['Haitlinger, Ryszard', 2],
    ['Kamran, Muhammad & Alatawi, Fahad J.', 3],
    ['Karakurt, İbrahim & Wohltmann, Andreas & Pamuk, Eyüp Efe', 4],
    ['Khanjani, Mohammad & Mirmoayedi, Ali-Naghi', 3],
    ['Khanjani, Mohammad & Mirmoayedi, Ali-Naghi & Fayaz, Bahman Asali', 3],
    ['LIU, DONG & YI, TIAN-CI & XU, YUN & ZHANG, ZHI-QIANG', 9],
    ['Noei, Javad & Maroufpoor, Mostafa & Faizi, Fardin', 2],
    ['Roland, Elżbieta & Gabryś, Grzegorz', 3],
    ['Saboori, Alireza & Shirvani, Zeinab', 12],
    ['Stalstedt, Jeanette & Laydanowicz, Joanna & Lehtinen, Pekka T', 9],
    ['Willmann, C.', 4],
    ['Xu, Si-Yuan & Yi, Tian-Ci & Guo, Jian-Jun & Jin, Dao-Chao', 2],
    ['Other (4)', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=71)',
    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);