function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Al-Azzazy, Mahmoud M. & Al-Rehiayani, Suloiman M.', 1],
    ['Barbar, Z.', 2],
    ['Corpuz-Raros, Leonila A. & Naredo, Jeremy C. B.', 5],
    ['Corpuz-Raros, Leonila Alzate & Naredo, Jeremy C. B.', 1],
    ['Ebrahimi, Najmeh & Noei, Javad', 3],
    ['Halliday, R. B.', 1],
    ['Heyer, Jacob Den & Sergeyenko, Alexey L.', 2],
    ['Heyer, Jacob den & Ueckermann, Edward A. & Khanjani, Mohammad', 4],
    ['Kalúz, Stanislav & Ermilov, Sergey G.', 7],
    ['Kalúz, Stanislav & Starý, Josef', 2],
    ['Khosravinejad, Maryam & Jafari, Shahriar & Paktinat-Saeij, Saeid', 2],
    ['LIU, DONG & YI, TIAN-CI & XU, YUN & ZHANG, ZHI-QIANG', 6],
    ['Paktinat-Saeij, Saeid & Damavandian, Mohammad Reza', 1],
    ['Rostami, Aylar & Bagheri, Mohammad & Jamshidi, Soleyman', 3],
    ['Sergeyenko, Alexey L.', 6],
    ['Other (1)', 1]
  ]);
  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);