function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ali, Muhammad & Ahmed, Khalil & Ali, Shaukat & Raza, Ghulam', 1],
    ['Ansi, Amin Al & Alkhalaf, Areej A. & Fadl, Hassan', 2],
    ['Biranvand, Amir & Tomaszewska, Wioletta & Li, Wenjing', 2],
    ['Coutanceau, Jean-Pierre', 1],
    ['Hounkpati, Kwevitoukoui & McHugh, Joseph V. & Niang, Abdoul Aziz', 4],
    ['Leeper, John R.', 1],
    ['Li, Wenjing & Chen, Bingxu & Huo, Lizhi & Chen, Xiaosheng', 22],
    ['Li, Wenjing & Chen, Bingxu & Toulakhom, Chantharath', 3],
    ['Li, Wenjing & Huo, Lizhi & Wang, Di & Ahrens, Dirk', 22],
    ['Najajrah, Mohammad H. & Swaileh, Khalid M. & Qumsiyeh, Mazin B.', 1],
    ['Nattier, Romain & Jourdan, Hervé & Mille, Christian', 1],
    ['POORANI, J.', 20],
    ['Pentinsaari, Mikko & Anderson, Robert & Borowiec, Lech', 1],
    ['Samin, N. & Shojai, M.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=82)',
    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);