function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alqarni, Abdulaziz S. & Hannan, Mohammed A. & Engel, Michael S.', 1],
    ['Ascher, John S. & Soh, Zestin W. W. & Chui, Shao Xiong', 2],
    ['Boustani, Mira & Rasmont, Pierre & Dathe, Holger H.', 2],
    ['ENGEL, MICHAEL S.', 3],
    ['El-Hawagry, Magdi S. & Sharaf, Mostafa R. & Al Dhafer, Hathal M.', 1],
    ['Engel, Michael S.', 1],
    ['I, Eritrea', 14],
    ['Khodaparast, Razeyeh & Monfared, Alireza', 4],
    ['Lhomme, Patrick', 9],
    ['Madl, Michael', 2],
    ['ROZEN, JEROME G.', 1],
    ['ROZEN, JEROME G. & ÖZBEK, HIKMET', 1],
    ['Risch, Stephan & Roberts, Stuart P. M. & Smit, Jan', 5],
    ['Straka, Jakub & Batelka, Jan & Pauly, Alain', 2],
    ['Straka, Jakub & Engel, Michael S.', 4],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=54)',
    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);