function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ahmad-Hosseini, Mohammad & Khanjani, Mohammad & Karamian, Roya', 4],
    ['Akbari, Ali & Irani-Nejad, Karim Haddad & Khanjani, Mohammad', 2],
    ['Akyazi, Rana & Soysal, Mete & Altunç, Yunus Emre', 4],
    ['Andre, H. M.', 1],
    ['André, Henri M.', 4],
    ['Darbemamieh, M. & Hajiqanbar, H. & Khanjani, M.', 8],
    ['Darbemamieh, Maryam & Kaźmierski, Andrzej', 6],
    ['Khanjani, M. & Ueckermann, E. A.', 2],
    ['KhaustovK, Alexander A.', 3],
    ['Ripka, Geza & Laniecka, Izabella & Kazmierski, Andrzej', 4],
    ['Silva, Guilherme Liberato Da & Cunha, Uemerson Silva Da', 4],
    ['Silva, Guilherme Liberato Da & Metzelthin, Maicon Henrique', 2],
    ['Ueckermann, Edward A. & Grout, Timothy G.', 4],
    ['Ueckermann, Edward A. & Situngu, Sivuyisiwe & Baker, Nigel P.', 2],
    ['Willmann, C.', 9],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=61)',
    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);